Expressions, 1:1 Correspondence, Inputs and Outputs
Students engage in a fun activity that requires them to ‘fix’ and ‘man’ a broken ATM. The ATMs are having an issue. For every deposit that is made, the ATM malfunctions and mistakes the deposit for a withdrawal, spitting out some amount of money. Students must find the equation that the ATM is using as it malfunctions to fix the ATM.
Fixing and manning the ATM may seem like just a silly game, but students unknowingly explore one-to-one correspondence of functions, linear graphs, and the way that slopes help to determine outputs.
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