Education Technology

Factor That

Activity Overview

Students explore the ‘operations’ keys on the TI-15 to build a secret rule their partner must solve. Students are encouraged to use ‘inverse’ operations to work backwards through the secret rule.


Describe, continue, and create number patterns resulting from performing addition or subtraction - ACMNA060


Rule, inverse

About the Lesson

Students generate rules using the special function keys [OP1] and [OP2] in the TI-15. The calculator is then passed across to a friend to ‘solve’ the formula for the rule. .
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