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.
Ratios that can be simplified to the same value
A representation of an object that is larger or smaller than the actual size of the object
When two ratios are equivalent
A quantitative relationship between two numbers that defines the quantity of the first number by comparing it to the second number
A structured list of equivalent ratios
Drawings that have been carefully measured and accurately reduced or enlarged using a consistent scale factor
The ratio of any two matching lengths in similar figures
A rectangular drawing that looks like a piece of tape but is divided to support mathematical calculations
