Zachy the Robot – Episode 1: The Leaning Tower of Robocity ($1.99) by GenevaMars, LLC is the first installment of Zachy the Robot and his friends, the Ultimate Repairbots.

The animated characters teach the concept of structural support, especially in buildings. There is even a song or two along the way to provide some review of the concepts. This app is similar to the Brainpop apps, but surpasses them by adding an interactivity component.

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