The Class Pet

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Does having a class pet make kids more responsible? When Class A gets a hamster named Mr. Whiskers while Class B doesn't, Momo and Puri notice "but both classes were already getting more responsible!" How can they tell what the hamster really changed? By comparing how much each class improved! Just like economists track changes over time to find true impacts. Classroom adventures that show why comparing differences makes all the difference. Prepare for "aha!" moments at any age!

Building tomorrow's problem-solvers, one story at a time.

This is Volume 5 in the Impact Evaluation Series for Children. It is a brief introduction to Difference-in-Difference Design.