Examples – Open Middle

The scrubbing feature is very useful, drag up or down on a number to change its value; the change will propagate through the rest of the working.

A great example of the use of the scrubbing feature can be found on this canvas created by Graspable Math for this lovely problem, Create a System of Two Equations by Daniel Luevanos on Open Middle, accessible for students yet such a great task for mathematical thinking. We could discuss inequalities here as well as simultaneous equations.

Sim Eq Opn Middle Problem 1

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