Lesson 5 — Final Challenge: Everything Combined

Age: Grades 4–6 (ages 9–12) Duration: 20 minutes Format: Web game (play right away, no prep needed) Concept: Mastery Review — combining direct calculation, reverse thinking, and rule inference in one lesson.

Learning Objective

Kids solve all 3 types of function machine puzzles mixed together — closing the unit with confidence about functions.

Do It Together (Parent-Child Co-participation)

Have your child design their own function machine (make up a rule) and let a parent try solving all 3 puzzle types.