According to the Common Core Standards, 7th grade math resources should focus on four critical areas: (1) developing understanding of and applying proportional relationships; (2) developing understanding of operations with rational numbers and working with expressions and linear equations; (3) solving problems involving scale drawings and informal geometric constructions, and working with two- and three-dimensional shapes to solve problems involving area, surface area, and volume; and (4) drawing inferences about populations based on samples.
If you know a particular Common Core Domain that you'd like to practice, you can drill down to it here.
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Video lessons: In the context of sampling a fish population, students learn that data can be used to make predictions about future conditions.
