Developing and using models Using mathematics and computational thinking Obtaining, evaluating, and communicating information
Scale, proportion, and quantity Systems and system models
Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities.
Use ratio and rate reasoning to solve real-world and mathematical problems
Decide whether two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.
Solve problems involving scale drawings of geometric figures, including computing actual lengths and areas from a scale drawing, and reproducing a scale drawing at a different scale.
Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks.
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