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<h2>Materials Needed</h2> <ul> <li>1 cup baking soda</li> <li>½ cup white vinegar</li> <li>Food coloring (optional)</li> <li>Play‑dough or papier‑mâché for the volcano shape</li> <li>Tray or large plate</li> </ul>

<h1>STEM Activities for Kids (Ages 3‑12)</h1> <p>Hands‑on experiments, coding puzzles, and engineering challenges that turn curiosity into real‑world skills.</p> Www.kidz-index.ln

<section class="rating"> <h2>Community Rating</h2> <div class="stars">★★★★☆ (4.2/5)</div> <p>Based on 127 parent reviews.</p> <a href="#review-form" class="btn-outline">Leave a Review</a> </section> 1 cup baking soda&lt