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! Observe! Infer! Predict! Experiment! Compare! Communicate! The characters in the Science Solves It! stories use these science skills and more to help them solve real-life problems.
