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By Laura Driscoll / Illustrated by Bob Ostrom
Javier has been waiting all winter for the hummingbirds to return. But one of them arrives early, while the weather is still cold. It’s up to Javier to figure how to keep the nectar in the feeder from freezing solid! Books in this perfect STEM series will help kids 5-8 think like scientists and get ahead in the classroom. Activities and experiments are included!
Dimensions: 6.5" x .14" x 9"