Pumpus Has A Flowing Idea!

ISBN-13: 9780997480931 / Angielski / Twarda / 2017 / 34 str.

Praba Soundararajan; Jack Spellman

Opis

Pumpus and his friends plan on spending the night in their treehouse. But when they realize they forgot the batteries for the flashlight, Pumpus uses his book of great inventions to solve their problem using a dynamo and waterwheel to make electricity. Through science, mechanics, and safety, Pumpus saves the day