Curated OER
Calculate Probability as a Fraction
Seventh graders solve 10 different problems that include determining the probability of various events described. First, they determine the probability that a marble drawn from a bad will be a specified color. Then, everyone determines a...
Curated OER
Rational Expressions
In this rational expressions worksheet, 9th graders solve 10 different problems that include multiplying various fractional expressions. First, they multiply the numerators of each fraction. Then, students multiply the denominators of...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Area Builder
Create shapes using colorful blocks, and explore the relationship between perimeter and area. CCSS.Math.Content.3.MD.C.7.a Find the area of a rectangle with whole-number side lengths by tiling it
Cool Math
Coolmath: The Magic 1
Take a look at how the understanding of fractions relates to one whole.
Illustrative Mathematics
Illustrative Mathematics: 3.md, 3.g, 3.nf Halves, Thirds, and Sixths
The purpose of this task is for students to use their understanding of area as the number of square units that covers a region, to recognize different ways of representing fractions with area, and to understand why fractions are...
Better Lesson
Better Lesson: Fraction Counting
Third graders develop their understanding of fractions through counting unit fractions on a number line.
Better Lesson
Better Lesson: Eating Fractions
Second graders read fractional amounts and measure food to make a trail mix.