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⚙️ Function Machine
Lesson 3 — Reverse: What Went In?
⏱ 20 minutes 💻 Web game (play right away, no prep needed)
💡 Inverse Thinking — working backward from the output to the input, practicing opposite operations in your head. 🎂 Grades 4–6 (ages 9–12)
👨👩👧 Notes for parents
Age: Grades 4–6 (ages 9–12) Duration: 20 minutes Format: Web game (play right away, no prep needed) Concept: Inverse Thinking — working backward from the output to the input, practicing opposite operations in your head.
Learning Objective
Kids find the input that produces a given output — practicing inverse thinking (doing the opposite operation).
Do It Together (Parent-Child Co-participation)
Play a guessing game: state the result and the rule, and let your child guess the starting number. Take turns making up the puzzles.