<!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>Anatomy of an Algebraic Expression</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: system-ui, -apple-system, sans-serif;
      color: #1e2945;
      background: transparent;
      padding: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
      user-select: none;
    }

    /* Main expression bar */
    .expr-container {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      font-size: 28px;
      font-weight: 700;
      padding: 10px 16px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      margin-bottom: 16px;
      max-width: 100%;
    }

    .expr-term {
      padding: 4px 10px;
      border-radius: 8px;
      cursor: pointer;
      transition: all 0.25s ease;
      display: inline-flex;
      align-items: baseline;
    }
    .expr-term.active {
      background: #e0f2fe;
      box-shadow: 0 0 0 2px #0284c7;
      color: #0369a1;
    }

    .divider-sign {
      display: flex;
      flex-direction: column;
      align-items: center;
      color: #64748b;
      font-weight: 600;
      position: relative;
      padding: 0 4px;
    }
    .divider-tag {
      font-size: 9px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: #94a3b8;
      font-weight: 700;
      position: absolute;
      top: -12px;
      white-space: nowrap;
    }

    /* Cards grid */
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      width: 100%;
      max-width: 580px;
    }

    .term-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 12px 10px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      cursor: pointer;
      transition: all 0.25s ease;
      position: relative;
    }
    .term-card.active {
      border-color: #0284c7;
      box-shadow: 0 4px 12px rgba(2, 132, 199, 0.12);
      background: #f0f9ff;
    }

    .card-header {
      font-size: 11px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.6px;
      color: #64748b;
      margin-bottom: 6px;
    }
    .card-term-display {
      font-size: 22px;
      font-weight: 800;
      color: #1e2945;
      margin-bottom: 10px;
    }

    .breakdown-list {
      display: flex;
      flex-direction: column;
      gap: 6px;
      width: 100%;
    }

    .breakdown-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #f8fafc;
      padding: 5px 8px;
      border-radius: 6px;
      font-size: 12px;
      border: 1px solid #f1f5f9;
    }
    .term-card.active .breakdown-row {
      background: #ffffff;
      border-color: #e2e8f0;
    }

    .row-label {
      color: #64748b;
      font-size: 11px;
      font-weight: 600;
    }
    .row-val {
      font-weight: 700;
      color: #1e2945;
      font-family: ui-monospace, monospace;
      font-size: 13px;
    }
    .val-negative {
      color: #dc2626;
      background: #fee2e2;
      padding: 1px 4px;
      border-radius: 4px;
    }
    .val-highlight {
      color: #0284c7;
    }

    /* Bottom toggle buttons */
    .controls {
      display: flex;
      gap: 8px;
      margin-top: 14px;
    }
    .btn-term {
      padding: 6px 14px;
      font-size: 12px;
      font-weight: 600;
      background: #ffffff;
      border: 1px solid #cbd5e1;
      border-radius: 20px;
      color: #475569;
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .btn-term.active {
      background: #1e2945;
      color: #ffffff;
      border-color: #1e2945;
    }

    @media (max-width: 480px) {
      .expr-container {
        font-size: 22px;
        gap: 4px;
        padding: 8px 12px;
      }
      .card-term-display {
        font-size: 18px;
      }
      .breakdown-row {
        flex-direction: column;
        gap: 2px;
        padding: 4px;
      }
      .row-label {
        font-size: 10px;
      }
      .row-val {
        font-size: 12px;
      }
      .cards-grid {
        gap: 6px;
      }
    }
  </style>
</head>
<body>

  
  <div class="expr-container">
    <div class="expr-term active" id="expr-0">7x²</div>
    <div class="divider-sign">
      <span class="divider-tag">divider</span>
      −
    </div>
    <div class="expr-term" id="expr-1">4y</div>
    <div class="divider-sign">
      <span class="divider-tag">divider</span>
      +
    </div>
    <div class="expr-term" id="expr-2">9</div>
  </div>

  
  <div class="cards-grid">
    
    <div class="term-card active" id="card-0">
      <div class="card-header">Term 1</div>
      <div class="card-term-display">7x²</div>
      <div class="breakdown-list">
        <div class="breakdown-row">
          <span class="row-label">Coefficient</span>
          <span class="row-val val-highlight">7</span>
        </div>
        <div class="breakdown-row">
          <span class="row-label">Variable</span>
          <span class="row-val">x</span>
        </div>
        <div class="breakdown-row">
          <span class="row-label">Exponent</span>
          <span class="row-val">2</span>
        </div>
      </div>
    </div>

    
    <div class="term-card" id="card-1">
      <div class="card-header">Term 2</div>
      <div class="card-term-display">−4y</div>
      <div class="breakdown-list">
        <div class="breakdown-row">
          <span class="row-label">Coefficient</span>
          <span class="row-val val-negative">−4</span>
        </div>
        <div class="breakdown-row">
          <span class="row-label">Variable</span>
          <span class="row-val">y</span>
        </div>
        <div class="breakdown-row">
          <span class="row-label">Exponent</span>
          <span class="row-val">1</span>
        </div>
      </div>
    </div>

    
    <div class="term-card" id="card-2">
      <div class="card-header">Term 3</div>
      <div class="card-term-display">+9</div>
      <div class="breakdown-list">
        <div class="breakdown-row">
          <span class="row-label">Type</span>
          <span class="row-val val-highlight">Constant</span>
        </div>
        <div class="breakdown-row">
          <span class="row-label">Value</span>
          <span class="row-val">+9</span>
        </div>
        <div class="breakdown-row">
          <span class="row-label">Variable</span>
          <span class="row-val">none</span>
        </div>
      </div>
    </div>
  </div>

  
  <div class="controls">
    <button class="btn-term active" id="btn-0">Term 1</button>
    <button class="btn-term" id="btn-1">Term 2</button>
    <button class="btn-term" id="btn-2">Term 3</button>
  </div>

  <script>
    let activeIdx = 0;
    const cards = [document.getElementById('card-0'), document.getElementById('card-1'), document.getElementById('card-2')];
    const exprs = [document.getElementById('expr-0'), document.getElementById('expr-1'), document.getElementById('expr-2')];
    const btns = [document.getElementById('btn-0'), document.getElementById('btn-1'), document.getElementById('btn-2')];

    function selectTerm(index) {
      activeIdx = index;
      cards.forEach((c, i) => c.classList.toggle('active', i === index));
      exprs.forEach((e, i) => e.classList.toggle('active', i === index));
      btns.forEach((b, i) => b.classList.toggle('active', i === index));
    }

    [0, 1, 2].forEach(i => {
      cards[i].addEventListener('click', () => selectTerm(i));
      exprs[i].addEventListener('click', () => selectTerm(i));
      btns[i].addEventListener('click', () => selectTerm(i));
    });
  </script>
</body>
</html>

Identifying Terms, Coefficients, Variables, and Constants

<!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;
      -webkit-tap-highlight-color: transparent;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: #f8fafc;
      color: #1e293b;
      padding: 12px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      min-height: 100%;
      user-select: none;
    }

    /* Top Controls */
    .controls {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
    }

    .hint {
      font-size: 13px;
      font-weight: 600;
      color: #64748b;
    }

    .toggle-btn {
      background: #ffffff;
      border: 1px solid #cbd5e1;
      border-radius: 20px;
      padding: 6px 14px;
      font-size: 13px;
      font-weight: 600;
      color: #0284c7;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 6px;
      transition: background 0.2s, border-color 0.2s;
    }

    .toggle-btn:hover {
      background: #f0f9ff;
      border-color: #38bdf8;
    }

    /* List of Cards */
    .cards-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
      flex: 1;
    }

    .card-row {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 12px 14px;
      cursor: pointer;
      display: grid;
      grid-template-columns: 70px 32px 90px 1fr;
      align-items: center;
      gap: 8px;
      transition: box-shadow 0.2s, border-color 0.2s, background 0.2s;
    }

    .card-row:hover {
      border-color: #cbd5e1;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    }

    .card-row.revealed {
      border-color: #93c5fd;
      background: #fcfdfe;
      box-shadow: 0 2px 10px rgba(2, 132, 199, 0.08);
    }

    /* Math Expressions */
    .math-term {
      font-family: "Cambria Math", "Times New Roman", serif;
      font-size: 24px;
      font-weight: 700;
      color: #0f172a;
      letter-spacing: 0.5px;
      display: flex;
      align-items: center;
    }

    .var {
      font-style: italic;
      color: #7c3aed;
    }

    .sign-neg {
      color: #e11d48;
    }

    .sign-pos {
      color: #0284c7;
    }

    /* Arrow Transition */
    .arrow-icon {
      font-size: 16px;
      color: #94a3b8;
      text-align: center;
      transition: transform 0.3s ease, color 0.3s ease;
    }

    .card-row.revealed .arrow-icon {
      color: #0284c7;
      transform: translateX(2px);
    }

    /* Revealed Math Container */
    .revealed-math {
      font-family: "Cambria Math", "Times New Roman", serif;
      font-size: 24px;
      font-weight: 700;
      color: #0f172a;
      opacity: 0.35;
      filter: blur(2px);
      transform: scale(0.95);
      transition: opacity 0.3s ease, filter 0.3s ease, transform 0.3s ease;
      display: flex;
      align-items: center;
    }

    .card-row.revealed .revealed-math {
      opacity: 1;
      filter: blur(0);
      transform: scale(1);
    }

    .ghost-num {
      color: #0284c7;
      background: #e0f2fe;
      border-radius: 6px;
      padding: 0 4px;
      margin-right: 2px;
      display: inline-block;
      transition: background 0.3s;
    }

    .ghost-num.neg {
      color: #e11d48;
      background: #ffe4e6;
    }

    /* Coefficient Badge Label */
    .badge-col {
      display: flex;
      justify-content: flex-end;
    }

    .coeff-badge {
      font-size: 13px;
      font-weight: 700;
      padding: 6px 10px;
      border-radius: 8px;
      background: #f1f5f9;
      color: #64748b;
      white-space: nowrap;
      transition: all 0.3s ease;
      border: 1px solid #e2e8f0;
      text-align: right;
    }

    .card-row.revealed .coeff-badge.pos {
      background: #eff6ff;
      color: #0284c7;
      border-color: #bfdbfe;
    }

    .card-row.revealed .coeff-badge.neg {
      background: #fff1f2;
      color: #e11d48;
      border-color: #fecdd3;
    }

    .sub-note {
      font-size: 11px;
      font-weight: 500;
      opacity: 0.85;
      display: block;
    }

    /* Mobile adjustment */
    @media (max-width: 400px) {
      .card-row {
        grid-template-columns: 55px 22px 75px 1fr;
        padding: 10px;
        gap: 4px;
      }
      .math-term, .revealed-math {
        font-size: 20px;
      }
      .coeff-badge {
        font-size: 11px;
        padding: 4px 6px;
      }
      .sub-note {
        font-size: 9px;
      }
    }
  </style>
</head>
<body>

  <div class="controls">
    <div class="hint">Tap a row to reveal</div>
    <button class="toggle-btn" id="toggleAllBtn" onclick="toggleAll()">
      <span id="toggleIcon">👁</span>
      <span id="toggleText">Reveal All</span>
    </button>
  </div>

  <div class="cards-list">
    
    <div class="card-row revealed" onclick="toggleRow(this)">
      <div class="math-term">
        <span class="sign-pos">+</span><span class="var">x</span>
      </div>
      <div class="arrow-icon">➔</div>
      <div class="revealed-math">
        <span class="ghost-num">(+1)</span><span class="var">x</span>
      </div>
      <div class="badge-col">
        <div class="coeff-badge pos">
          +1
          <span class="sub-note">Coefficient</span>
        </div>
      </div>
    </div>

    
    <div class="card-row revealed" onclick="toggleRow(this)">
      <div class="math-term">
        <span class="sign-neg">−</span><span class="var">y</span>
      </div>
      <div class="arrow-icon">➔</div>
      <div class="revealed-math">
        <span class="ghost-num neg">(−1)</span><span class="var">y</span>
      </div>
      <div class="badge-col">
        <div class="coeff-badge neg">
          −1
          <span class="sub-note">Coefficient</span>
        </div>
      </div>
    </div>

    
    <div class="card-row revealed" onclick="toggleRow(this)">
      <div class="math-term">
        <span class="sign-neg">−8</span><span class="var">k</span>
      </div>
      <div class="arrow-icon">➔</div>
      <div class="revealed-math">
        <span class="ghost-num neg">(−8)</span><span class="var">k</span>
      </div>
      <div class="badge-col">
        <div class="coeff-badge neg">
          −8
          <span class="sub-note">Sign stays</span>
        </div>
      </div>
    </div>
  </div>

  <script>
    function toggleRow(card) {
      card.classList.toggle('revealed');
      updateButtonState();
    }

    function toggleAll() {
      const rows = document.querySelectorAll('.card-row');
      const anyHidden = Array.from(rows).some(r => !r.classList.contains('revealed'));
      
      rows.forEach(r => {
        if (anyHidden) {
          r.classList.add('revealed');
        } else {
          r.classList.remove('revealed');
        }
      });
      updateButtonState();
    }

    function updateButtonState() {
      const rows = document.querySelectorAll('.card-row');
      const allRevealed = Array.from(rows).every(r => r.classList.contains('revealed'));
      const text = document.getElementById('toggleText');
      const icon = document.getElementById('toggleIcon');
      
      if (allRevealed) {
        text.textContent = 'Hide All';
        icon.textContent = '🙈';
      } else {
        text.textContent = 'Reveal All';
        icon.textContent = '👁';
      }
    }
  </script>
</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">
  <title>Anatomy of an Algebraic Expression</title>
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: #ffffff;
      color: #1e2945;
      padding: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
    }

    .app-root {
      width: 100%;
      max-width: 640px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    /* Mode Navigation */
    .nav-bar {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 6px;
    }

    .nav-btn {
      background: #f1f5f9;
      border: 1px solid #cbd5e1;
      border-radius: 20px;
      padding: 6px 14px;
      font-size: 13px;
      font-weight: 600;
      color: #475569;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .nav-btn.active {
      background: #2563eb;
      color: #ffffff;
      border-color: #2563eb;
      box-shadow: 0 2px 6px rgba(37, 99, 235, 0.3);
    }

    /* Expression Bar */
    .expr-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 8px;
      padding: 8px 4px;
    }

    .term-box {
      background: #f8fafc;
      border: 2px solid #e2e8f0;
      border-radius: 12px;
      padding: 10px 4px;
      text-align: center;
      font-size: 20px;
      font-weight: 700;
      letter-spacing: -0.5px;
      transition: all 0.25s ease;
      cursor: pointer;
      position: relative;
    }

    .term-box .tag {
      display: block;
      font-size: 11px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-top: 4px;
      opacity: 0.7;
    }

    /* Highlight parts */
    .c-val { transition: all 0.25s ease; border-radius: 4px; padding: 0 2px; }
    .v-val { transition: all 0.25s ease; border-radius: 4px; padding: 0 2px; }

    .hl-coef {
      background: #fef08a;
      color: #854d0e;
      box-shadow: 0 0 0 2px #eab308;
    }

    .hl-var {
      background: #dbeafe;
      color: #1e40af;
      box-shadow: 0 0 0 2px #3b82f6;
    }

    .hl-const {
      background: #fed7aa;
      color: #9a3412;
      box-shadow: 0 0 0 2px #f97316;
    }

    .hl-term {
      border-color: #3b82f6;
      background: #eff6ff;
      transform: translateY(-2px);
    }

    .ghost-one {
      display: inline-block;
      max-width: 0;
      opacity: 0;
      color: #eab308;
      transition: all 0.25s ease;
      overflow: hidden;
      vertical-align: bottom;
    }

    .show-ghost .ghost-one {
      max-width: 14px;
      opacity: 1;
    }

    /* Summary Breakdown Rows */
    .breakdown-grid {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .summary-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 8px 12px;
      border-radius: 8px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      font-size: 13px;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .summary-row.active {
      background: #ffffff;
      border-color: #2563eb;
      box-shadow: 0 2px 8px rgba(37, 99, 235, 0.12);
    }

    .row-label {
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .row-label .pill {
      font-size: 10px;
      padding: 2px 6px;
      border-radius: 12px;
      font-weight: 700;
      text-transform: uppercase;
    }

    .row-values {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-weight: 600;
      font-size: 13px;
    }

    /* Notice Badge */
    .warning-badge {
      display: flex;
      align-items: center;
      gap: 8px;
      background: #fffbeb;
      border: 1px solid #fef08a;
      border-radius: 8px;
      padding: 8px 12px;
      font-size: 12px;
      font-weight: 600;
      color: #92400e;
      transition: all 0.3s ease;
    }

    .badge-icon {
      font-size: 16px;
      line-height: 1;
    }

    /* Dot Indicators */
    .indicator-dots {
      display: flex;
      justify-content: center;
      gap: 8px;
      margin-top: 4px;
    }

    .dot {
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: #cbd5e1;
      cursor: pointer;
      border: none;
      transition: all 0.2s ease;
      padding: 0;
    }

    .dot.active {
      background: #2563eb;
      transform: scale(1.2);
    }

    @media (max-width: 440px) {
      .term-box {
        font-size: 16px;
        padding: 8px 2px;
      }
      .term-box .tag {
        font-size: 9px;
      }
      .summary-row {
        font-size: 12px;
        padding: 6px 10px;
      }
      .row-values {
        font-size: 12px;
      }
    }
  </style>
</head>
<body>

<div class="app-root">

  
  <div class="nav-bar">
    <button class="nav-btn active" onclick="setMode('terms')">1. Terms</button>
    <button class="nav-btn" onclick="setMode('vars')">2. Variables</button>
    <button class="nav-btn" onclick="setMode('coefs')">3. Coefficients</button>
    <button class="nav-btn" onclick="setMode('const')">4. Constant</button>
  </div>

  
  <div class="expr-container">
    <div class="term-box" id="t1" onclick="setMode('terms')">
      <span class="c-val" id="c1">4</span><span class="v-val" id="v1">x²</span>
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</html>

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<html lang="en">
<head>
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  <div class="diagram-wrap">
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</body>
</html>

OGM.8.ALG.1

Aligned learning resources

Related diagrams