<!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;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      -webkit-tap-highlight-color: transparent;
    }

    body {
      padding: 10px;
      color: #1e2945;
      background: transparent;
      display: flex;
      flex-direction: column;
      justify-content: center;
      min-height: 100%;
    }

    .comparison-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      width: 100%;
      max-width: 640px;
      margin: 0 auto;
    }

    .mat-card {
      border-radius: 12px;
      padding: 12px 10px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      cursor: pointer;
      user-select: none;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      border: 2px solid transparent;
    }

    .mat-card:active {
      transform: scale(0.98);
    }

    /* Glass Column */
    .glass-card {
      background-color: #e6f7fa;
      border-color: #bcecf2;
    }
    .glass-card.active {
      box-shadow: 0 0 0 2px #22b7ff;
    }

    /* Metal Column */
    .metal-card {
      background-color: #edf2f7;
      border-color: #d2dbe5;
    }
    .metal-card.active {
      box-shadow: 0 0 0 2px #718096;
    }

    .card-title {
      font-size: 17px;
      font-weight: 700;
      text-align: center;
      color: #1e2945;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      padding-bottom: 4px;
      border-bottom: 1px dashed rgba(30, 41, 69, 0.15);
    }

    .objects-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 4px;
      background: rgba(255, 255, 255, 0.65);
      padding: 6px 4px;
      border-radius: 8px;
    }

    .obj-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      gap: 2px;
    }

    .obj-icon {
      font-size: 20px;
      line-height: 1.2;
    }

    .obj-name {
      font-size: 11px;
      font-weight: 600;
      color: #475569;
    }

    .props-list {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .prop-tag {
      background: rgba(255, 255, 255, 0.9);
      padding: 6px 8px;
      border-radius: 6px;
      font-size: 12.5px;
      font-weight: 600;
      color: #1e2945;
      display: flex;
      align-items: center;
      gap: 6px;
      box-shadow: 0 1px 2px rgba(0,0,0,0.03);
    }

    .prop-icon {
      font-size: 14px;
      flex-shrink: 0;
    }

    @media (min-width: 480px) {
      .mat-card {
        padding: 14px 12px;
        gap: 12px;
      }
      .card-title {
        font-size: 19px;
      }
      .obj-icon {
        font-size: 24px;
      }
      .obj-name {
        font-size: 12px;
      }
      .prop-tag {
        font-size: 13.5px;
        padding: 7px 10px;
      }
    }
  </style>
</head>
<body>

  <div class="comparison-grid">
    
    <div class="mat-card glass-card" id="cardGlass" onclick="selectCard('cardGlass')">
      <div class="card-title">
        <span>🪟</span> Glass
      </div>
      
      <div class="objects-row">
        <div class="obj-item">
          <span class="obj-icon">🪟</span>
          <span class="obj-name">Window</span>
        </div>
        <div class="obj-item">
          <span class="obj-icon">🥛</span>
          <span class="obj-name">Cup</span>
        </div>
        <div class="obj-item">
          <span class="obj-icon">🔍</span>
          <span class="obj-name">Lens</span>
        </div>
      </div>

      <div class="props-list">
        <div class="prop-tag">
          <span class="prop-icon">👁️</span>
          <span>See-through<br>(transparent)</span>
        </div>
        <div class="prop-tag">
          <span class="prop-icon">✨</span>
          <span>Smooth surface</span>
        </div>
        <div class="prop-tag">
          <span class="prop-icon">💥</span>
          <span>Fragile</span>
        </div>
      </div>
    </div>

    
    <div class="mat-card metal-card" id="cardMetal" onclick="selectCard('cardMetal')">
      <div class="card-title">
        <span>🥄</span> Metal
      </div>
      
      <div class="objects-row">
        <div class="obj-item">
          <span class="obj-icon">🔑</span>
          <span class="obj-name">Key</span>
        </div>
        <div class="obj-item">
          <span class="obj-icon">🥫</span>
          <span class="obj-name">Can</span>
        </div>
        <div class="obj-item">
          <span class="obj-icon">🥄</span>
          <span class="obj-name">Spoon</span>
        </div>
      </div>

      <div class="props-list">
        <div class="prop-tag">
          <span class="prop-icon">✨</span>
          <span>Shiny surface</span>
        </div>
        <div class="prop-tag">
          <span class="prop-icon">❄️</span>
          <span>Feels cool to touch</span>
        </div>
        <div class="prop-tag">
          <span class="prop-icon">🛡️</span>
          <span>Strong & hard</span>
        </div>
      </div>
    </div>
  </div>

  <script>
    function selectCard(id) {
      document.getElementById('cardGlass').classList.remove('active');
      document.getElementById('cardMetal').classList.remove('active');
      document.getElementById(id).classList.add('active');
    }
  </script>
</body>
</html>

Naming Everyday Materials: Wood, Plastic, Glass, and Metal

<!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;
      color: #1e2945;
      background: #ffffff;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      min-height: 100%;
      padding: 12px;
      user-select: none;
    }

    /* Tabs */
    .tabs {
      display: flex;
      gap: 8px;
      margin-bottom: 8px;
      z-index: 10;
    }

    .tab-btn {
      background: #f1f5f9;
      border: 1px solid #e2e8f0;
      color: #64748b;
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 6px;
      transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
    }

    .tab-btn.active {
      background: #e0f2fe;
      border-color: #38bdf8;
      color: #0369a1;
      box-shadow: 0 2px 4px rgba(56, 189, 248, 0.15);
    }

    /* Stage Area */
    .stage-container {
      position: relative;
      width: 100%;
      max-width: 480px;
      height: 280px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .view-panel {
      position: absolute;
      inset: 0;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s ease;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .view-panel.active {
      opacity: 1;
      pointer-events: auto;
    }

    .item-svg {
      width: 100%;
      height: 100%;
      overflow: visible;
    }

    /* Callout Badges */
    .badge {
      position: absolute;
      padding: 8px 12px;
      border-radius: 12px;
      text-align: center;
      box-shadow: 0 4px 12px rgba(30, 41, 69, 0.06);
      border: 1.5px solid;
      cursor: pointer;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .badge:hover {
      box-shadow: 0 6px 16px rgba(30, 41, 69, 0.12);
    }

    .badge-title {
      font-size: 15px;
      font-weight: 700;
      line-height: 1.2;
    }

    .badge-desc {
      font-size: 12px;
      font-weight: 500;
      opacity: 0.85;
      margin-top: 2px;
      white-space: nowrap;
    }

    /* Color Themes for Materials */
    .badge-metal {
      background: #f1f5f9;
      border-color: #94a3b8;
      color: #1e2945;
    }

    .badge-plastic {
      background: #e0f2fe;
      border-color: #38bdf8;
      color: #0369a1;
    }

    .badge-wood {
      background: #fef3c7;
      border-color: #f59e0b;
      color: #92400e;
    }

    /* Hotspot Pointer Dots */
    .hotspot {
      cursor: pointer;
    }

    .hotspot-pulse {
      animation: pulse 2s infinite ease-in-out;
      transform-origin: center;
    }

    @keyframes pulse {
      0%, 100% { r: 5px; opacity: 0.8; }
      50% { r: 8px; opacity: 0.3; }
    }

    /* Pointer Lines */
    .pointer-line {
      stroke-dasharray: 4 4;
      animation: dash 30s linear infinite;
    }

    @keyframes dash {
      to { stroke-dashoffset: -100; }
    }

    /* Responsive adjustments */
    @media (max-width: 380px) {
      .stage-container {
        height: 250px;
      }
      .badge {
        padding: 6px 10px;
      }
      .badge-title {
        font-size: 14px;
      }
      .badge-desc {
        font-size: 11px;
      }
    }
  </style>
</head>
<body>

  
  <div class="tabs">
    <button class="tab-btn active" id="tabScissors" onclick="showItem('scissors')">
      <span>✂️</span> Scissors
    </button>
    <button class="tab-btn" id="tabPencil" onclick="showItem('pencil')">
      <span>✏️</span> Pencil
    </button>
  </div>

  
  <div class="stage-container">

    
    <div class="view-panel active" id="panelScissors">
      <svg class="item-svg" viewBox="0 0 380 240">
        
        <path class="pointer-line" d="M 120,40 L 210,80" stroke="#94a3b8" stroke-width="1.5" fill="none" />
        <path class="pointer-line" d="M 260,200 L 155,160" stroke="#38bdf8" stroke-width="1.5" fill="none" />

        
        <g transform="translate(180, 120) rotate(-20)">
          
          <path d="M -15,0 L 95,-12 Q 105,-10 90,-2 Z" fill="#cbd5e1" stroke="#64748b" stroke-width="1.5" />
          
          
          <path d="M -15,0 L 95,12 Q 105,10 90,2 Z" fill="#e2e8f0" stroke="#64748b" stroke-width="1.5" />

          
          <path d="M -15,0 C -35,-5 -65,-30 -85,-18 C -105,-5 -85,25 -60,10 C -45,0 -25,-2 -15,0 Z" 
                fill="#38bdf8" stroke="#0284c7" stroke-width="2" />
          <ellipse cx="-75" cy="-3" rx="14" ry="9" fill="#ffffff" stroke="#0284c7" stroke-width="1.5" />

          
          <path d="M -15,0 C -35,5 -65,30 -85,18 C -105,5 -85,-25 -60,-10 C -45,0 -25,2 -15,0 Z" 
                fill="#0284c7" stroke="#0369a1" stroke-width="2" />
          <ellipse cx="-75" cy="3" rx="14" ry="9" fill="#ffffff" stroke="#0369a1" stroke-width="1.5" />

          
          <circle cx="-15" cy="0" r="4.5" fill="#475569" stroke="#1e2945" stroke-width="1" />
          <circle cx="-15" cy="0" r="2" fill="#94a3b8" />
        </g>

        
        <g class="hotspot" onclick="highlight('metal-scissors')">
          <circle class="hotspot-pulse" cx="210" cy="80" r="6" fill="#94a3b8" />
          <circle cx="210" cy="80" r="3.5" fill="#475569" />
        </g>
        <g class="hotspot" onclick="highlight('plastic-scissors')">
          <circle class="hotspot-pulse" cx="155" cy="160" r="6" fill="#38bdf8" />
          <circle cx="155" cy="160" r="3.5" fill="#0284c7" />
        </g>
      </svg>

      
      <div class="badge badge-metal" id="badgeMetalScissors" style="top: 14px; left: 24px;" onclick="highlight('metal-scissors')">
        <div class="badge-title">Metal</div>
        <div class="badge-desc">Sharp &amp; strong</div>
      </div>

      <div class="badge badge-plastic" id="badgePlasticScissors" style="bottom: 14px; right: 24px;" onclick="highlight('plastic-scissors')">
        <div class="badge-title">Plastic</div>
        <div class="badge-desc">Comfortable grip</div>
      </div>
    </div>

    
    <div class="view-panel" id="panelPencil">
      <svg class="item-svg" viewBox="0 0 380 240">
        
        <path class="pointer-line" d="M 110,40 L 160,110" stroke="#f59e0b" stroke-width="1.5" fill="none" />
        <path class="pointer-line" d="M 270,195 L 255,130" stroke="#94a3b8" stroke-width="1.5" fill="none" />

        
        <g transform="translate(190, 120) rotate(-15)">
          
          <polygon points="-110,-10 -135,0 -110,10" fill="#fde68a" stroke="#d97706" stroke-width="1" />
          
          <polygon points="-125,-4 -135,0 -125,4" fill="#334155" />

          
          <rect x="-110" y="-10" width="160" height="7" fill="#fbbf24" stroke="#d97706" stroke-width="1" />
          <rect x="-110" y="-3" width="160" height="7" fill="#f59e0b" stroke="#d97706" stroke-width="1" />
          <rect x="-110" y="4" width="160" height="6" fill="#d97706" />

          
          <rect x="50" y="-10.5" width="22" height="21" rx="1" fill="#cbd5e1" stroke="#64748b" stroke-width="1.2" />
          <line x1="56" y1="-10.5" x2="56" y2="10.5" stroke="#94a3b8" stroke-width="1" />
          <line x1="64" y1="-10.5" x2="64" y2="10.5" stroke="#94a3b8" stroke-width="1" />

          
          <rect x="72" y="-9.5" width="22" height="19" rx="3" fill="#f472b6" stroke="#db2777" stroke-width="1.2" />
        </g>

        
        <g class="hotspot" onclick="highlight('wood-pencil')">
          <circle class="hotspot-pulse" cx="160" cy="110" r="6" fill="#f59e0b" />
          <circle cx="160" cy="110" r="3.5" fill="#b45309" />
        </g>
        <g class="hotspot" onclick="highlight('metal-pencil')">
          <circle class="hotspot-pulse" cx="255" cy="130" r="6" fill="#94a3b8" />
          <circle cx="255" cy="130" r="3.5" fill="#475569" />
        </g>
      </svg>

      
      <div class="badge badge-wood" id="badgeWoodPencil" style="top: 14px; left: 24px;" onclick="highlight('wood-pencil')">
        <div class="badge-title">Wood</div>
        <div class="badge-desc">Easy to sharpen</div>
      </div>

      <div class="badge badge-metal" id="badgeMetalPencil" style="bottom: 14px; right: 24px;" onclick="highlight('metal-pencil')">
        <div class="badge-title">Metal</div>
        <div class="badge-desc">Holds eraser</div>
      </div>
    </div>

  </div>

  <script>
    function showItem(item) {
      const isScissors = item === 'scissors';
      
      document.getElementById('tabScissors').classList.toggle('active', isScissors);
      document.getElementById('tabPencil').classList.toggle('active', !isScissors);
      
      document.getElementById('panelScissors').classList.toggle('active', isScissors);
      document.getElementById('panelPencil').classList.toggle('active', !isScissors);
    }

    function highlight(type) {
      let el;
      if (type === 'metal-scissors') el = document.getElementById('badgeMetalScissors');
      if (type === 'plastic-scissors') el = document.getElementById('badgePlasticScissors');
      if (type === 'wood-pencil') el = document.getElementById('badgeWoodPencil');
      if (type === 'metal-pencil') el = document.getElementById('badgeMetalPencil');

      if (el) {
        el.style.transform = 'scale(1.08)';
        setTimeout(() => {
          el.style.transform = 'scale(1)';
        }, 250);
      }
    }
  </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>Object vs Material</title>
  <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: #f8f9fa;
      color: #1e2945;
      width: 100%;
      min-height: 100%;
      padding: 16px 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      user-select: none;
    }

    .main-flow {
      width: 100%;
      max-width: 640px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 12px;
    }

    @media (min-width: 520px) {
      .main-flow {
        flex-direction: row;
        justify-content: center;
        align-items: center;
        gap: 8px;
      }
    }

    /* Source Object */
    .object-card {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: 16px;
      padding: 14px 18px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      flex-shrink: 0;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
    }

    .object-card .label {
      font-size: 14px;
      font-weight: 700;
      color: #1e2945;
      margin-top: 6px;
      line-height: 1.2;
    }

    .object-card .sub {
      font-size: 12px;
      font-weight: 600;
      color: #22b7ff;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    /* Connector */
    .connector {
      display: flex;
      align-items: center;
      justify-content: center;
      color: #94a3b8;
      font-size: 20px;
      font-weight: bold;
      transform: rotate(90deg);
    }

    @media (min-width: 520px) {
      .connector {
        transform: rotate(0deg);
        padding: 0 4px;
      }
    }

    /* Materials Grid */
    .materials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 8px;
      width: 100%;
      max-width: 420px;
    }

    .material-card {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: 14px;
      padding: 10px 6px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      cursor: pointer;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.03);
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .material-card.active {
      border-color: #22b7ff;
      box-shadow: 0 0 0 2px rgba(34, 183, 255, 0.25);
    }

    .material-label {
      font-size: 13px;
      font-weight: 700;
      color: #1e2945;
      margin-top: 6px;
      line-height: 1.2;
    }

    .material-tag {
      font-size: 11px;
      font-weight: 600;
      color: #64748b;
      margin-top: 2px;
    }

    /* Chair SVG Graphics */
    .chair-svg {
      width: 52px;
      height: 52px;
      display: block;
    }

    /* Chair Colors */
    .chair-neutral { fill: #64748b; }
    .chair-wood { fill: #8c532b; }
    .chair-wood-accent { fill: #b87333; }
    .chair-plastic { fill: #22b7ff; }
    .chair-plastic-accent { fill: #67d4ff; }
    .chair-metal { fill: #71717a; }
    .chair-metal-accent { fill: #cbd5e1; }
  </style>
</head>
<body>

  <div class="main-flow">
    
    <div class="object-card">
      <span class="sub">Object</span>
      <svg class="chair-svg" viewBox="0 0 64 64" fill="none">
        
        <rect x="20" y="8" width="6" height="48" rx="3" class="chair-neutral" />
        <rect x="24" y="12" width="20" height="6" rx="3" class="chair-neutral" />
        <rect x="24" y="22" width="20" height="6" rx="3" class="chair-neutral" />
        <rect x="18" y="32" width="28" height="6" rx="3" class="chair-neutral" />
        <rect x="40" y="36" width="5" height="20" rx="2.5" class="chair-neutral" />
      </svg>
      <div class="label">Chair</div>
    </div>

    
    <div class="connector">➔</div>

    
    <div class="materials-grid">
      
      
      <div class="material-card active" onclick="selectCard(0)">
        <svg class="chair-svg" viewBox="0 0 64 64" fill="none">
          <rect x="20" y="8" width="6" height="48" rx="3" class="chair-wood" />
          <rect x="24" y="12" width="20" height="6" rx="3" class="chair-wood-accent" />
          <rect x="24" y="22" width="20" height="6" rx="3" class="chair-wood-accent" />
          <rect x="18" y="32" width="28" height="6" rx="3" class="chair-wood" />
          <rect x="40" y="36" width="5" height="20" rx="2.5" class="chair-wood" />
        </svg>
        <div class="material-label">Wood</div>
        <div class="material-tag">Made of</div>
      </div>

      
      <div class="material-card" onclick="selectCard(1)">
        <svg class="chair-svg" viewBox="0 0 64 64" fill="none">
          
          <path d="M 22 10 C 22 10, 20 28, 20 34 C 20 38, 24 38, 44 38 C 44 38, 42 28, 42 20 C 42 12, 38 10, 22 10 Z" class="chair-plastic" />
          <path d="M 24 14 C 24 14, 22 28, 22 32 C 22 34, 26 35, 40 35" stroke="#ffffff" stroke-width="2" stroke-linecap="round" opacity="0.6"/>
          <rect x="21" y="38" width="5" height="18" rx="2.5" class="chair-plastic" />
          <rect x="38" y="38" width="5" height="18" rx="2.5" class="chair-plastic" />
        </svg>
        <div class="material-label">Plastic</div>
        <div class="material-tag">Made of</div>
      </div>

      
      <div class="material-card" onclick="selectCard(2)">
        <svg class="chair-svg" viewBox="0 0 64 64" fill="none">
          
          <rect x="20" y="8" width="5" height="48" rx="2.5" class="chair-metal" />
          <rect x="23" y="10" width="3" height="46" rx="1.5" class="chair-metal-accent" opacity="0.6"/>
          <rect x="24" y="14" width="18" height="5" rx="2.5" class="chair-metal" />
          <rect x="24" y="24" width="18" height="5" rx="2.5" class="chair-metal" />
          <rect x="18" y="33" width="26" height="5" rx="2.5" class="chair-metal" />
          <rect x="19" y="34" width="24" height="2" rx="1" class="chair-metal-accent" />
          <rect x="39" y="36" width="5" height="20" rx="2.5" class="chair-metal" />
          <rect x="41" y="37" width="2" height="18" rx="1" class="chair-metal-accent" />
        </svg>
        <div class="material-label">Metal</div>
        <div class="material-tag">Made of</div>
      </div>

    </div>
  </div>

  <script>
    const cards = document.querySelectorAll('.material-card');
    function selectCard(index) {
      cards.forEach((card, i) => {
        card.classList.toggle('active', i === index);
      });
    }
  </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">
  <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%;
    }
    .grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      width: 100%;
      max-width: 600px;
    }
    @media (max-width: 420px) {
      .grid {
        grid-template-columns: 1fr;
        gap: 10px;
      }
    }
    .col-card {
      border-radius: 12px;
      padding: 14px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      transition: box-shadow 0.2s ease;
    }
    .wood-card {
      background: #fdf8f4;
      border: 1.5px solid #d4a373;
    }
    .plastic-card {
      background: #f0f9ff;
      border: 1.5px solid #7dd3fc;
    }
    .header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1.5px solid rgba(0,0,0,0.06);
      padding-bottom: 8px;
    }
    .title {
      font-size: 18px;
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .wood-title { color: #854d0e; }
    .plastic-title { color: #0369a1; }
    
    .badge {
      font-size: 11px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      padding: 3px 8px;
      border-radius: 20px;
    }
    .wood-badge {
      background: #fef3c7;
      color: #92400e;
      border: 1px solid #fde68a;
    }
    .plastic-badge {
      background: #e0f2fe;
      color: #0369a1;
      border: 1px solid #bae6fd;
    }

    .section-label {
      font-size: 11px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: #64748b;
      margin-top: 2px;
    }

    .items-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 6px;
    }
    .item-box {
      background: #ffffff;
      border-radius: 8px;
      padding: 8px 4px;
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 4px;
      cursor: pointer;
      user-select: none;
      transition: background-color 0.2s ease, box-shadow 0.2s ease;
    }
    .wood-card .item-box {
      border: 1px solid #e9d5c3;
    }
    .plastic-card .item-box {
      border: 1px solid #cbe9fd;
    }
    .item-box:active {
      background: #f1f5f9;
    }
    .item-icon {
      font-size: 22px;
      line-height: 1;
    }
    .item-name {
      font-size: 11px;
      font-weight: 600;
      color: #1e2945;
      line-height: 1.2;
    }

    .tags-col {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .prop-tag {
      font-size: 13px;
      font-weight: 600;
      padding: 8px 10px;
      border-radius: 8px;
      background: #ffffff;
      display: flex;
      align-items: center;
      gap: 8px;
      line-height: 1.2;
    }
    .wood-card .prop-tag {
      border: 1px solid #ecdacf;
      color: #6d3a0f;
    }
    .plastic-card .prop-tag {
      border: 1px solid #d4effc;
      color: #075985;
    }
    .prop-icon {
      font-size: 15px;
      flex-shrink: 0;
    }
  </style>
</head>
<body>
  <div class="grid">
    
    <div class="col-card wood-card">
      <div class="header">
        <div class="title wood-title">
          <span>🪵</span> Wood
        </div>
        <span class="badge wood-badge">Natural</span>
      </div>

      <div class="section-label">Common Objects</div>
      <div class="items-row">
        <div class="item-box" title="Wooden Desk">
          <span class="item-icon">🪑</span>
          <span class="item-name">Desk</span>
        </div>
        <div class="item-box" title="Wooden Pencil">
          <span class="item-icon">✏️</span>
          <span class="item-name">Pencil</span>
        </div>
        <div class="item-box" title="Wooden Ruler">
          <span class="item-icon">📏</span>
          <span class="item-name">Ruler</span>
        </div>
      </div>

      <div class="section-label">Key Properties</div>
      <div class="tags-col">
        <div class="prop-tag">
          <span class="prop-icon">🌲</span>
          <span>Natural (from trees)</span>
        </div>
        <div class="prop-tag">
          <span class="prop-icon">〰️</span>
          <span>Visible grain lines</span>
        </div>
        <div class="prop-tag">
          <span class="prop-icon">✋</span>
          <span>Feels warm and firm</span>
        </div>
      </div>
    </div>

    
    <div class="col-card plastic-card">
      <div class="header">
        <div class="title plastic-title">
          <span>🧪</span> Plastic
        </div>
        <span class="badge plastic-badge">Human-Made</span>
      </div>

      <div class="section-label">Common Objects</div>
      <div class="items-row">
        <div class="item-box" title="Plastic Bottle">
          <span class="item-icon">🧴</span>
          <span class="item-name">Bottle</span>
        </div>
        <div class="item-box" title="Toy Building Brick">
          <span class="item-icon">🧱</span>
          <span class="item-name">Toy Brick</span>
        </div>
        <div class="item-box" title="Safety Goggles">
          <span class="item-icon">🥽</span>
          <span class="item-name">Goggles</span>
        </div>
      </div>

      <div class="section-label">Key Properties</div>
      <div class="tags-col">
        <div class="prop-tag">
          <span class="prop-icon">🏭</span>
          <span>Human-made</span>
        </div>
        <div class="prop-tag">
          <span class="prop-icon">➰</span>
          <span>Smooth or flexible</span>
        </div>
        <div class="prop-tag">
          <span class="prop-icon">💧</span>
          <span>Waterproof</span>
        </div>
      </div>
    </div>
  </div>
</body>
</html>

science.ks1.y1.t3.s2

Aligned learning resources

Related diagrams