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Lesson 2 — Numbers on Both Sides

⏱ 20 minutes 💻 Web game (play right away, no prep needed) 💡 Variables — when numbers appear on both sides of the scale, you must add up each side before finding x. 🎂 Grades 4–6 (ages 9–12)
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👨‍👩‍👧 Notes for parents

Age: Grades 4–6 (ages 9–12) Duration: 20 minutes Format: Web game (play right away, no prep needed) Concept: Variables — when numbers appear on both sides of the scale, you must add up each side before finding x.

Learning Objective

Kids find x when there are several number blocks on both sides of the scale — practicing summing each side before comparing balance.

Do It Together (Parent-Child Co-participation)

Play a guessing game with coins: place two different-sized piles on each side and ask how many baht need adding to make them equal.