The Garden Helpers

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Does helping in the garden make plants grow better? When Miss Lily randomly invites some kids to be garden helpers (but not everyone shows up!), Momo and Puri wonder "how can we tell if helping made a difference?" They discover that sometimes an invitation is the perfect tool for finding answers - just like economists use when people can't be forced to participate. Garden adventures that dig into how researchers handle real-world messiness. Prepare for "aha!" moments at any age!

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

This is Volume 3 of the Impact Evaluation Series for Children. It is a brief introduction to Instrumental Variables.