 # Function Machines: Find the Rule

Students will have fun with inputting numbers and checking the output numbers with this video worksheet!

Function machines help with student’s problem-solving skills and improve algebra skills. In this video, students have an input number and the output number. The task is to find the rule for the function machine.

The teacher demonstrates by first writing the input number on the white board. She then explains to students to now look at the output number. Is it larger or smaller than the input number? If it is smaller, then addition will be the rule and if the output number is smaller, then the solution will be a subtraction rule.  She writes the equation on the board and inserts each answer choice until the current one is found. She completes more examples to ensure understanding.

Students enjoy working with function machines and their number sense and problem-solving skills improve with practice. Complete this algebra activity in your classroom today!

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