Acc6.2 Ratios, Rates, and Percentages

In this unit, students learn to understand and use the terms “ratio,” “rate,” “equivalent ratios,” “per,” “at this rate,” “constant speed,” “constant rate,” “unit rate,” “speed,” “pace,” “percent,” and “percentage.” They recognize when two ratios are or are not equivalent and that equivalent ratios have equal unit rates.

They represent ratios as expressions, and represent equivalent ratios with double number line diagrams, tape diagrams, and tables. They represent percentages with tables, tape diagrams, and double number line diagrams, and as expressions. They use these terms and representations in reasoning about situations involving unit price, constant speed, measurement conversion, color mixtures, and recipes.