<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <title>Interpreting Multiplication as Comparison</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      user-select: none;
      -webkit-user-select: none;
    }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: transparent;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
      padding: 12px;
    }
    .grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      width: 100%;
      max-width: 660px;
    }
    @media (max-width: 480px) {
      .grid {
        grid-template-columns: 1fr;
        gap: 10px;
      }
    }
    .panel {
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: 14px;
      padding: 14px 12px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 12px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.04);
      cursor: pointer;
      transition: border-color 0.2s, box-shadow 0.2s;
    }
    .panel:hover {
      border-color: #22b7ff;
      box-shadow: 0 4px 12px rgba(34, 183, 255, 0.12);
    }
    .row {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .label {
      font-size: 13px;
      font-weight: 700;
      width: 64px;
      flex-shrink: 0;
      color: #475569;
    }
    .track {
      display: flex;
      flex: 1;
      gap: 3px;
      align-items: center;
    }
    .block {
      height: 34px;
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 14px;
      transition: background 0.25s, transform 0.25s, color 0.25s;
    }
    .b-blue {
      background: #e0f2fe;
      border: 1.5px solid #38bdf8;
      color: #0369a1;
      flex: 1;
    }
    .b-amber {
      background: #fef3c7;
      border: 1.5px solid #f59e0b;
      color: #b45309;
      flex: 1;
    }
    .b-amber.solved {
      background: #dcfce7;
      border-color: #22c55e;
      color: #15803d;
    }
    .bracket-wrap {
      position: relative;
      margin-left: 72px;
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    .bracket-line {
      width: 100%;
      height: 6px;
      border-left: 2px solid #94a3b8;
      border-right: 2px solid #94a3b8;
      border-bottom: 2px solid #94a3b8;
      border-radius: 0 0 4px 4px;
    }
    .eq-box {
      margin-top: 4px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 8px;
      padding: 6px 10px;
      font-size: 13px;
      font-weight: 700;
      color: #0f172a;
      text-align: center;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
    }
    .highlight {
      color: #0284c7;
      background: #e0f2fe;
      padding: 1px 5px;
      border-radius: 4px;
    }
    .highlight-green {
      color: #16a34a;
      background: #dcfce7;
      padding: 1px 5px;
      border-radius: 4px;
    }
    .hint {
      font-size: 11px;
      font-weight: 600;
      color: #94a3b8;
      text-align: center;
      margin-top: 6px;
      letter-spacing: 0.2px;
    }
  </style>
</head>
<body>

  <div class="grid">
    
    <div class="panel" id="panel1" role="button" aria-label="Compare Maya and Liam">
      <div style="display: flex; flex-direction: column; gap: 8px;">
        <div class="row">
          <span class="label">Maya</span>
          <div class="track" style="max-width: calc(100% / 6);">
            <div class="block b-blue">5</div>
          </div>
        </div>
        
        <div class="row">
          <span class="label">Liam</span>
          <div class="track" id="liamBlocks">
            <div class="block b-blue">5</div>
            <div class="block b-blue">5</div>
            <div class="block b-blue">5</div>
            <div class="block b-blue">5</div>
            <div class="block b-blue">5</div>
            <div class="block b-blue">5</div>
          </div>
        </div>

        <div class="bracket-wrap">
          <div class="bracket-line"></div>
        </div>
      </div>

      <div class="eq-box">
        Liam = <span class="highlight">6 × 5</span> = <b>30</b>
      </div>
    </div>

    
    <div class="panel" id="panel2" role="button" aria-label="Compare Giraffe and Kangaroo">
      <div style="display: flex; flex-direction: column; gap: 8px;">
        <div class="row">
          <span class="label">Giraffe</span>
          <div class="track" id="giraffeTrack">
            <div class="block b-amber" id="gb1">?</div>
            <div class="block b-amber" id="gb2">?</div>
            <div class="block b-amber" id="gb3">?</div>
          </div>
        </div>

        <div class="bracket-wrap">
          <div class="bracket-line" style="border-color: #f59e0b;"></div>
          <span style="font-size: 11px; font-weight: 800; color: #b45309; margin-top: 1px;">Total = 18 ft</span>
        </div>

        <div class="row">
          <span class="label">Kangaroo</span>
          <div class="track" style="max-width: calc(100% / 3);">
            <div class="block b-amber" id="kb">?</div>
          </div>
        </div>
      </div>

      <div class="eq-box" id="eq2">
        18 = 3 × <i>k</i> &nbsp;→&nbsp; <span class="highlight-green"><i>k</i> = 6 ft</span>
      </div>
    </div>
  </div>

  <div class="hint">Tap either diagram to inspect equal parts</div>

  <script>
    const panel1 = document.getElementById('panel1');
    const panel2 = document.getElementById('panel2');
    const liamBlocks = document.querySelectorAll('#liamBlocks .block');
    const kBlocks = [document.getElementById('gb1'), document.getElementById('gb2'), document.getElementById('gb3'), document.getElementById('kb')];
    let solved = true;

    panel1.addEventListener('click', () => {
      liamBlocks.forEach((b, idx) => {
        setTimeout(() => {
          b.style.transform = 'translateY(-3px)';
          b.style.background = '#bae6fd';
          setTimeout(() => {
            b.style.transform = 'translateY(0)';
            b.style.background = '#e0f2fe';
          }, 350);
        }, idx * 70);
      });
    });

    panel2.addEventListener('click', () => {
      solved = !solved;
      kBlocks.forEach(b => {
        b.textContent = solved ? '6' : '?';
        b.classList.toggle('solved', solved);
      });
    });

    // Initialize right diagram solved state
    kBlocks.forEach(b => {
      b.textContent = '6';
      b.classList.add('solved');
    });
  </script>
</body>
</html>

Interpreting Multiplication Equations as Comparisons

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Additive vs Multiplicative Comparison</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    }

    body {
      background: transparent;
      color: #1e293b;
      padding: 16px 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
    }

    .container {
      width: 100%;
      max-width: 620px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .panels {
      display: flex;
      flex-direction: row;
      align-items: stretch;
      justify-content: center;
      position: relative;
      gap: 8px;
    }

    .panel {
      flex: 1;
      padding: 14px 10px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      background: #f8fafc;
      border-radius: 8px;
    }

    .panel-title {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .panel-add .panel-title { 
      color: #0369a1; 
    }
    
    .panel-mul .panel-title { 
      color: #6d28d9; 
    }

    /* Central VS separator */
    .vs-container {
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 5;
      padding: 0 4px;
    }

    .vs-badge {
      background: #e11d48;
      color: #ffffff;
      font-size: 11px;
      font-weight: 800;
      letter-spacing: 0.5px;
      padding: 5px 9px;
      border-radius: 999px;
      box-shadow: 0 2px 5px rgba(225, 29, 72, 0.25);
      user-select: none;
    }

    .bars-container {
      width: 100%;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 12px;
      min-height: 96px;
      margin: auto 0;
    }

    .bar-row {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      flex-wrap: wrap;
    }

    /* Proportional segmented unit bars (1 unit = 14px) */
    .bar-group {
      display: flex;
      border-radius: 4px;
      overflow: hidden;
    }

    .unit-segment {
      width: 14px;
      height: 28px;
      display: inline-block;
      box-sizing: border-box;
      border-right: 1px solid rgba(255, 255, 255, 0.35);
    }

    .unit-segment:last-child {
      border-right: none;
    }

    /* Base 3 units */
    .bg-blue-3 .unit-segment {
      background: #0284c7;
    }

    /* Added 4 units */
    .bg-green-4 .unit-segment {
      background: #10b981;
    }

    /* Multiplier 3-unit copies */
    .bg-purple-3 .unit-segment {
      background: #8b5cf6;
    }

    .bar-wrapper {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 3px;
    }

    .bar-count {
      font-size: 12px;
      font-weight: 700;
      color: #475569;
    }

    .op-symbol {
      font-size: 16px;
      font-weight: 700;
      color: #64748b;
      margin-top: 14px;
    }

    .sub-label {
      font-size: 13px;
      font-weight: 600;
      color: #475569;
      line-height: 1.3;
    }

    .equation-box {
      margin-top: 10px;
      padding: 7px 12px;
      border-radius: 6px;
      font-size: 16px;
      font-weight: 800;
      width: 100%;
      text-align: center;
    }

    .panel-add .equation-box {
      background: #e0f2fe;
      color: #0369a1;
    }

    .panel-mul .equation-box {
      background: #ede9fe;
      color: #6d28d9;
    }

    /* Responsive stacked layout for mobile */
    @media (max-width: 480px) {
      .panels {
        flex-direction: column;
        gap: 10px;
      }

      .vs-container {
        padding: 4px 0;
      }

      .unit-segment {
        width: 13px;
        height: 26px;
      }

      .equation-box {
        font-size: 15px;
      }
    }
  </style>
</head>
<body>
  <div class="container">
    <div class="panels">
      
      
      <div class="panel panel-add">
        <div class="panel-title">Additive (+)</div>
        
        <div class="bars-container">
          <div class="bar-row">
            
            <div class="bar-wrapper">
              <div class="bar-group bg-blue-3" title="Start with 3 units">
                <span class="unit-segment"></span>
                <span class="unit-segment"></span>
                <span class="unit-segment"></span>
              </div>
              <span class="bar-count">3</span>
            </div>

            <span class="op-symbol">+</span>

            
            <div class="bar-wrapper">
              <div class="bar-group bg-green-4" title="Add 4 more units">
                <span class="unit-segment"></span>
                <span class="unit-segment"></span>
                <span class="unit-segment"></span>
                <span class="unit-segment"></span>
              </div>
              <span class="bar-count">4</span>
            </div>
          </div>

          <div class="sub-label">4 more than 3</div>
        </div>

        <div class="equation-box">3 + 4 = 7</div>
      </div>

      
      <div class="vs-container">
        <div class="vs-badge">VS</div>
      </div>

      
      <div class="panel panel-mul">
        <div class="panel-title">Multiplicative (×)</div>
        
        <div class="bars-container">
          
          <div class="bar-row">
            <div class="bar-wrapper">
              <div class="bar-group bg-purple-3" title="Group 1 (3 units)">
                <span class="unit-segment"></span>
                <span class="unit-segment"></span>
                <span class="unit-segment"></span>
              </div>
              <span class="bar-count">3</span>
            </div>

            <div class="bar-wrapper">
              <div class="bar-group bg-purple-3" title="Group 2 (3 units)">
                <span class="unit-segment"></span>
                <span class="unit-segment"></span>
                <span class="unit-segment"></span>
              </div>
              <span class="bar-count">3</span>
            </div>

            <div class="bar-wrapper">
              <div class="bar-group bg-purple-3" title="Group 3 (3 units)">
                <span class="unit-segment"></span>
                <span class="unit-segment"></span>
                <span class="unit-segment"></span>
              </div>
              <span class="bar-count">3</span>
            </div>

            <div class="bar-wrapper">
              <div class="bar-group bg-purple-3" title="Group 4 (3 units)">
                <span class="unit-segment"></span>
                <span class="unit-segment"></span>
                <span class="unit-segment"></span>
              </div>
              <span class="bar-count">3</span>
            </div>
          </div>

          <div class="sub-label">4 times as many as 3</div>
        </div>

        <div class="equation-box">4 × 3 = 12</div>
      </div>

    </div>
  </div>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      width: 100%;
      min-height: 100%;
      background: transparent;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 16px 12px;
      user-select: none;
    }
    .diagram {
      width: 100%;
      max-width: 520px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .row-section {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .row-header {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      font-size: 14px;
      font-weight: 700;
      color: #1e2945;
    }
    .badge {
      font-size: 13px;
      font-weight: 700;
      color: #2563eb;
      background: #eff6ff;
      padding: 2px 8px;
      border-radius: 6px;
      border: 1px solid #bfdbfe;
    }
    .box-grid {
      display: flex;
      gap: 8px;
      width: 100%;
    }
    .box {
      flex: 1;
      min-height: 54px;
      background: #f8fafc;
      border: 2px solid #93c5fd;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      font-size: 18px;
      transition: background 0.25s ease, border-color 0.25s ease, opacity 0.25s ease;
      cursor: pointer;
    }
    .box.active {
      background: #eff6ff;
      border-color: #3b82f6;
    }
    .box.dimmed {
      opacity: 0.35;
      border-color: #cbd5e1;
      background: #f1f5f9;
    }
    .single-box {
      width: calc(25% - 6px);
      flex: none;
    }
    .bracket-wrap {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 4px;
      margin-top: 4px;
    }
    .bracket-svg {
      width: 100%;
      height: 14px;
      stroke: #3b82f6;
      stroke-width: 2;
      fill: none;
      stroke-linecap: round;
      stroke-linejoin: round;
    }
    .summary-bar {
      margin-top: 4px;
      background: #eff6ff;
      border: 1.5px solid #bfdbfe;
      border-radius: 10px;
      padding: 10px 14px;
      display: flex;
      align-items: center;
      justify-content: space-around;
      text-align: center;
      font-weight: 700;
    }
    .summary-text {
      font-size: 15px;
      color: #1e40af;
    }
    .summary-math {
      font-size: 16px;
      color: #2563eb;
      background: #ffffff;
      padding: 4px 10px;
      border-radius: 6px;
      border: 1px solid #bfdbfe;
    }
    .controls {
      display: flex;
      justify-content: center;
      gap: 6px;
      margin-top: 2px;
    }
    .step-btn {
      background: #ffffff;
      border: 1.5px solid #cbd5e1;
      border-radius: 6px;
      padding: 4px 10px;
      font-size: 13px;
      font-weight: 600;
      color: #475569;
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .step-btn.active {
      background: #3b82f6;
      border-color: #3b82f6;
      color: #ffffff;
    }
  </style>
</head>
<body>
  <div class="diagram">
    
    <div class="row-section">
      <div class="row-header">
        <span>Friend’s Stickers</span>
        <span class="badge">1 group of 3 = 3</span>
      </div>
      <div class="box-grid">
        <div class="box single-box active" title="1 group of 3">
          <span>⭐</span><span>⭐</span><span>⭐</span>
        </div>
      </div>
    </div>

    
    <div class="row-section">
      <div class="row-header">
        <span>Your Stickers</span>
        <span class="badge" id="yourBadge">4 groups of 3 = 12</span>
      </div>
      <div class="box-grid" id="yourBoxes">
        <div class="box active" data-idx="1"><span>⭐</span><span>⭐</span><span>⭐</span></div>
        <div class="box active" data-idx="2"><span>⭐</span><span>⭐</span><span>⭐</span></div>
        <div class="box active" data-idx="3"><span>⭐</span><span>⭐</span><span>⭐</span></div>
        <div class="box active" data-idx="4"><span>⭐</span><span>⭐</span><span>⭐</span></div>
      </div>
      <div class="bracket-wrap">
        <svg class="bracket-svg" viewBox="0 0 400 20" preserveAspectRatio="none">
          <path d="M 4 2 L 4 10 Q 4 16 12 16 L 190 16 Q 198 16 200 20 Q 202 16 210 16 L 388 16 Q 396 16 396 10 L 396 2" />
        </svg>
      </div>
    </div>

    
    <div class="summary-bar">
      <div class="summary-text" id="comparisonLabel">4 times as many as 3</div>
      <div class="summary-math" id="mathSentence">4 × 3 = 12</div>
    </div>

    
    <div class="controls">
      <button class="step-btn" data-count="1">1×</button>
      <button class="step-btn" data-count="2">2×</button>
      <button class="step-btn" data-count="3">3×</button>
      <button class="step-btn active" data-count="4">4×</button>
    </div>
  </div>

  <script>
    const boxes = document.querySelectorAll('#yourBoxes .box');
    const buttons = document.querySelectorAll('.step-btn');
    const yourBadge = document.getElementById('yourBadge');
    const comparisonLabel = document.getElementById('comparisonLabel');
    const mathSentence = document.getElementById('mathSentence');

    function setMultiplier(n) {
      boxes.forEach((box, i) => {
        if (i < n) {
          box.classList.add('active');
          box.classList.remove('dimmed');
        } else {
          box.classList.remove('active');
          box.classList.add('dimmed');
        }
      });

      buttons.forEach(btn => {
        btn.classList.toggle('active', parseInt(btn.dataset.count) === n);
      });

      const total = n * 3;
      yourBadge.textContent = `${n} ${n === 1 ? 'group' : 'groups'} of 3 = ${total}`;
      comparisonLabel.textContent = `${n} ${n === 1 ? 'time' : 'times'} as many as 3`;
      mathSentence.textContent = `${n} × 3 = ${total}`;
    }

    buttons.forEach(btn => {
      btn.addEventListener('click', () => setMultiplier(parseInt(btn.dataset.count)));
    });

    boxes.forEach(box => {
      box.addEventListener('click', () => setMultiplier(parseInt(box.dataset.idx)));
    });
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      -webkit-tap-highlight-color: transparent;
    }

    body {
      background: transparent;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
      padding: 14px 8px;
    }

    .main-wrap {
      width: 100%;
      max-width: 560px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 14px;
    }

    /* Translation Columns Layout */
    .translation-grid {
      width: 100%;
      display: grid;
      grid-template-columns: 1fr 0.9fr 0.9fr 2.4fr 0.9fr;
      gap: 6px;
      align-items: center;
    }

    @media (max-width: 420px) {
      .translation-grid {
        grid-template-columns: 0.95fr 0.85fr 0.85fr 2.5fr 0.85fr;
        gap: 4px;
      }
    }

    /* Interactive Parts */
    .part-col {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
      cursor: pointer;
      border-radius: 12px;
      padding: 2px;
      transition: opacity 0.2s ease;
    }

    .badge-top, .badge-bottom {
      width: 100%;
      min-height: 52px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      font-weight: 700;
      border-radius: 10px;
      padding: 6px 4px;
      font-size: 16px;
      line-height: 1.25;
      letter-spacing: 0.01em;
      transition: box-shadow 0.2s ease, border-color 0.2s ease;
      user-select: none;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    }

    .badge-bottom {
      font-size: 22px;
      min-height: 46px;
    }

    .arrow-box {
      display: flex;
      align-items: center;
      justify-content: center;
      height: 24px;
      color: #334155;
      transition: color 0.2s ease;
    }

    .arrow-icon {
      font-size: 19px;
      font-weight: 900;
      line-height: 1;
    }

    /* High-contrast Token Color Schemes */
    .theme-blue .badge-top { background: #dbeafe; color: #1e3a8a; border: 2px solid #93c5fd; }
    .theme-blue .badge-bottom { background: #bfdbfe; color: #172554; border: 2px solid #60a5fa; }
    .theme-blue.active .badge-top, .theme-blue.active .badge-bottom { box-shadow: 0 0 0 3px #2563eb; }
    .theme-blue.active .arrow-box { color: #1d4ed8; }

    .theme-purple .badge-top { background: #f3e8ff; color: #581c87; border: 2px solid #d8b4fe; }
    .theme-purple .badge-bottom { background: #e9d5ff; color: #3b0764; border: 2px solid #c084fc; }
    .theme-purple.active .badge-top, .theme-purple.active .badge-bottom { box-shadow: 0 0 0 3px #9333ea; }
    .theme-purple.active .arrow-box { color: #7e22ce; }

    .theme-amber .badge-top { background: #fef3c7; color: #78350f; border: 2px solid #fcd34d; }
    .theme-amber .badge-bottom { background: #fde68a; color: #451a03; border: 2px solid #fbbf24; }
    .theme-amber.active .badge-top, .theme-amber.active .badge-bottom { box-shadow: 0 0 0 3px #d97706; }
    .theme-amber.active .arrow-box { color: #b45309; }

    .theme-emerald .badge-top {
      background: #d1fae5;
      color: #064e3b;
      border: 2px solid #6ee7b7;
      font-size: 13.5px;
      line-height: 1.25;
      word-spacing: 1px;
      padding: 6px 3px;
    }
    .theme-emerald .badge-bottom { background: #a7f3d0; color: #022c22; border: 2px solid #34d399; font-size: 24px; }
    .theme-emerald.active .badge-top, .theme-emerald.active .badge-bottom { box-shadow: 0 0 0 3px #059669; }
    .theme-emerald.active .arrow-box { color: #047857; }

    .theme-rose .badge-top { background: #ffe4e6; color: #881337; border: 2px solid #fda4af; }
    .theme-rose .badge-bottom { background: #fecdd3; color: #4c0519; border: 2px solid #fb7185; }
    .theme-rose.active .badge-top, .theme-rose.active .badge-bottom { box-shadow: 0 0 0 3px #e11d48; }
    .theme-rose.active .arrow-box { color: #be123c; }

    /* Inactive / Dimmed State with readable contrast (>4.5:1) */
    .part-col.dimmed {
      opacity: 0.6;
    }
    .part-col.dimmed .arrow-box {
      color: #475569;
    }

    @media (max-width: 380px) {
      .theme-emerald .badge-top {
        font-size: 12px;
        line-height: 1.2;
      }
      .badge-top, .badge-bottom {
        font-size: 14px;
        min-height: 48px;
      }
      .badge-bottom {
        font-size: 19px;
        min-height: 42px;
      }
    }

    /* Explanation Banner */
    .focus-card {
      min-height: 40px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 600;
      color: #1e2945;
      text-align: center;
      padding: 4px 8px;
    }

    /* Result Pill */
    .result-strip {
      width: 100%;
      background: #f8fafc;
      border: 2px solid #cbd5e1;
      border-radius: 12px;
      padding: 10px 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
    }

    .result-label {
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.6px;
      color: #475569;
    }

    .result-equation {
      font-size: 22px;
      font-weight: 800;
      letter-spacing: 1px;
      color: #0f172a;
    }

    /* Controls */
    .controls {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .btn-step {
      background: #e2e8f0;
      border: 1.5px solid #94a3b8;
      color: #1e2945;
      padding: 6px 14px;
      border-radius: 8px;
      font-size: 13px;
      font-weight: 600;
      cursor: pointer;
      transition: background 0.15s ease;
    }

    .btn-step:hover {
      background: #cbd5e1;
    }

    .btn-step.active-btn {
      background: #1e2945;
      color: #ffffff;
      border-color: #1e2945;
    }

    .step-dots {
      display: flex;
      gap: 8px;
      align-items: center;
    }

    .dot-btn {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      border: 2px solid transparent;
      background: #94a3b8;
      cursor: pointer;
      padding: 0;
      transition: background-color 0.2s ease, border-color 0.2s ease;
    }

    .dot-btn:hover {
      background: #64748b;
    }

    .dot-btn.active {
      background: #2563eb;
      border-color: #93c5fd;
    }
  </style>
</head>
<body>

  <div class="main-wrap">

    
    <div class="translation-grid" id="grid" role="region" aria-label="Word to equation translation">
      
      <div class="part-col theme-blue active" onclick="selectPart(0)" tabindex="0" role="button" aria-label="Step 1: 24">
        <div class="badge-top">24</div>
        <div class="arrow-box"><span class="arrow-icon">↓</span></div>
        <div class="badge-bottom">24</div>
      </div>

      
      <div class="part-col theme-purple" onclick="selectPart(1)" tabindex="0" role="button" aria-label="Step 2: is">
        <div class="badge-top">is</div>
        <div class="arrow-box"><span class="arrow-icon">↓</span></div>
        <div class="badge-bottom">=</div>
      </div>

      
      <div class="part-col theme-amber" onclick="selectPart(2)" tabindex="0" role="button" aria-label="Step 3: 6">
        <div class="badge-top">6</div>
        <div class="arrow-box"><span class="arrow-icon">↓</span></div>
        <div class="badge-bottom">6</div>
      </div>

      
      <div class="part-col theme-emerald" onclick="selectPart(3)" tabindex="0" role="button" aria-label="Step 4: times as many as">
        <div class="badge-top">times as<br>many as</div>
        <div class="arrow-box"><span class="arrow-icon">↓</span></div>
        <div class="badge-bottom">×</div>
      </div>

      
      <div class="part-col theme-rose" onclick="selectPart(4)" tabindex="0" role="button" aria-label="Step 5: 4">
        <div class="badge-top">4</div>
        <div class="arrow-box"><span class="arrow-icon">↓</span></div>
        <div class="badge-bottom">4</div>
      </div>
    </div>

    
    <div class="focus-card" id="focusText" aria-live="polite">
      Tap any part to see its math translation
    </div>

    
    <div class="result-strip">
      <span class="result-label">Equation</span>
      <span class="result-equation">24 = 6 × 4</span>
    </div>

    
    <div class="controls">
      <button class="btn-step" id="allBtn" onclick="showAll()">Show All</button>
      <div class="step-dots" id="dotsContainer">
        <button class="dot-btn active" onclick="selectPart(0)" title="Part 1: 24" aria-label="Part 1: 24"></button>
        <button class="dot-btn" onclick="selectPart(1)" title="Part 2: is" aria-label="Part 2: is"></button>
        <button class="dot-btn" onclick="selectPart(2)" title="Part 3: 6" aria-label="Part 3: 6"></button>
        <button class="dot-btn" onclick="selectPart(3)" title="Part 4: times as many as" aria-label="Part 4: times as many as"></button>
        <button class="dot-btn" onclick="selectPart(4)" title="Part 5: 4" aria-label="Part 5: 4"></button>
      </div>
    </div>

  </div>

  <script>
    const explanations = [
      '“24” represents the total quantity 24',
      '“is” translates to the equals sign (=)',
      '“6” represents the multiplier factor 6',
      '“times as many as” translates to multiplication (×)',
      '“4” represents the reference group size 4'
    ];

    const cols = document.querySelectorAll('.part-col');
    const dots = document.querySelectorAll('.dot-btn');
    const focusText = document.getElementById('focusText');
    const allBtn = document.getElementById('allBtn');

    function selectPart(index) {
      allBtn.classList.remove('active-btn');

      cols.forEach((col, i) => {
        if (i === index) {
          col.classList.add('active');
          col.classList.remove('dimmed');
        } else {
          col.classList.remove('active');
          col.classList.add('dimmed');
        }
      });

      dots.forEach((dot, i) => {
        dot.classList.toggle('active', i === index);
      });

      focusText.textContent = explanations[index];
    }

    function showAll() {
      allBtn.classList.add('active-btn');

      cols.forEach(col => {
        col.classList.add('active');
        col.classList.remove('dimmed');
      });

      dots.forEach(dot => dot.classList.remove('active'));
      focusText.textContent = 'Each word in the sentence translates directly into the equation.';
    }

    // Keyboard support for accessibility
    cols.forEach((col, idx) => {
      col.addEventListener('keydown', (e) => {
        if (e.key === 'Enter' || e.key === ' ') {
          e.preventDefault();
          selectPart(idx);
        }
      });
    });

    // Initialize with first token active
    selectPart(0);
  </script>
</body>
</html>

Multiplying vs. Adding to Compare

Modeling Times-as-Many with Bar Models

Solving for Unknown Comparative Factors and Products

Multi-Step Problems: Adding and Multiplying to Compare

Scaling Quantities Up and Down in Real-World Contexts

Solving Many-to-Many Correspondence Problems

Solving Cartesian Product and Combination Problems

math

Multiplicative Comparisons and Scaling Problems

Découvrir la notion de grandeurs qui varient ensemble

Reconnaître une situation proportionnelle simple

Distinguer proportionnalité et non-proportionnalité : l'âge et la taille

Identifier la proportionnalité dans les tarifs et promotions

Définition mathématique de la proportionnalité entre deux grandeurs

Justifier le statut proportionnel d'une situation

Reconnaître les situations de proportionnalité

Utiliser la linéarité multiplicative : double, triple et moitié

Utiliser la linéarité additive : combiner deux quantités connues

Utiliser la méthode du passage à l'unité

Choisir la procédure la plus adaptée selon les données

Adapter les quantités d'une recette de cuisine

Problèmes de proportionnalité avec calculs intermédiaires

Méthodes de résolution de problèmes de proportionnalité

La démarche en 4 étapes pour résoudre un problème

Résoudre des problèmes additifs en deux étapes

Résoudre des problèmes additifs en trois étapes

Résoudre des problèmes multiplicatifs « parties-tout » en une étape

Résoudre des problèmes de comparaison multiplicative

Résoudre des problèmes mixtes associant addition et multiplication

Problèmes à étapes avec les quatre opérations

Résolution de problèmes arithmétiques au cycle 3

Compléter un tableau de proportionnalité

Calculer et utiliser le coefficient de proportionnalité

Comprendre la notion d'échelle sur un plan ou une carte

Calculer une distance réelle à partir d'une échelle

Calculer une longueur sur un plan selon une échelle donnée

Résoudre des problèmes de vitesse constante (distance et durée)

Tableaux de proportionnalité, échelles et grandeurs

Propiedades asociativa y conmutativa de la multiplicación

Multiplicación de tres o más factores

Estimación de productos mediante redondeo

Problemas multiplicativos de grupos iguales y arreglos

Problemas multiplicativos de comparación: tantas veces más

Problemas multiplicativos de combinatoria y cartesiano

Duplicar y partir a la mitad como estrategia mental

Detección y corrección de errores en la multiplicación

Problemas multiplicativos de dos pasos con dinero y cantidades

Cálculo mental y problemas multiplicativos

Understanding Multiplication as a Comparison

Writing Multiplication Equations From Comparison Statements

Drawing Models for Multiplicative Comparisons

Multiplicative Comparison: Finding the Unknown Product

Multiplicative Comparison: Finding the Unknown Factor

Distinguishing Multiplicative From Additive Comparison

Multiplicative Comparison: Finding the Unknown Group Size

Two-Step Multiplicative Comparison Problems

Multiplicative Comparison in Real-World Contexts

Multiplicative Comparison

Modéliser la comparaison multiplicative : « n fois plus » et « n fois moins »

OGM.5.OA.1

Aligned learning resources

Related diagrams