My co teacher and I have used the comparison routine for several units in our Math 7 class. We used them to compare the properties of Quadrilaterals, to compare the use of a proportion to solve for Tax, Tip, and Discount, and finally to compare an Equation and Inequalities. We use the the Math Workshop model in class so we co constructed these routines during the "M" - Meet the Teacher portion of our workshop. The students seemed to enjoy coming up with the like and unlike characteristics.
