Students develop understanding of unit rates and percentages, building on prior work with equivalent ratios and constant rates and using measurement and unit-conversion situations to reason about rates per 1 and rates per 100.
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A Units of Measurement and Unit Conversion · 3 lessons
Goals
Recognize that when we measure things in two different units, the pairs of measurements are equivalent ratios. Apply this understanding to convert a measurement from one unit to another unit.
Use a “rate per 1” to solve problems involving unit conversion.
Lessons
Anchoring Units of Measurement
Measuring with Different-Size Units (Optional)
Converting Units
B Rates · 6 lessons
Goals
Apply reasoning about ratios and unit rates to solve problems and explain the solution methods.
Calculate the two unit rates associated with a ratio and interpret them in the context of a situation.
Lessons
Comparing Speeds and Prices
Interpreting Rates
Equivalent Ratios Have the Same Unit Rates
More Rate Comparisons
Solving Rate Problems
More about Constant Speed (Optional)
C Percentages · 7 lessons
Goals
Choose a strategy to solve problems involving percentages and explain the solution method.
Create tape diagrams, double number line diagrams, or tables to represent situations involving percentages.
Lessons
What Are Percentages?
Representing Percentages with Double Number Line Diagrams