UNIT 2 - RATES, RATIOS, &
PROPORTIONAL REASONING
PARENT LETTERS
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OVERVIEW
In this unit, students will:
- Understand the concept of a ratio.
- Understand the concept of a unit rate.
- Solve real-world problems using tables, tape diagrams, double number line and/or equations.
- Interpret and compute quotients of fractions.
- Make tables of equivalent ratios & plot on a coordinate plane.
- Solve unit rate problems including unit pricing and constant speed.
- Find a percent of a quantity; find the whole given the part/percent; and find the part given the whole/percent.
VOCABULARY
- Percent: A fraction or ration in which the denominator is 100
- Proportion: An equation which states that two ratios are equal.
- Rate: A comparison of two quantities that have different units of measure
- Ratio: compares quantities that share a fixed, multiplicative relationship.
- Rational number: A number that can be written as a/b where a and b are integers, but b is not equal to 0.
- Unit Ratio (unit rate): are ratios written as some number to 1.
- Quantity: is an amount that can be counted or measured.