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Modeling is an essential tool in every scientist's arsenal. Physical models, computer simulations, and written descriptions are just a few modeling techniques scientists employ to test hypotheses, illustrate concepts, and refine their ideas. Aligned to the NextGen Science Standards, this deep-diving series guides readers through the process of making their own models that relate to key scientific concepts. Readers learn how to evaluate the merits of their models, make improvements, and communicate what they've learned. Features include: Information about scientific breakthroughs and the theories that define our understanding of Earth and space. Test Your Knowledge quizzes. Explanations of predictive and illustrative models. Meets the objectives of the NextGen Science Standards. Develops problem-solving and critical-thinking skills. Provides scaffolding for learners.