Better Lesson: Finding What's Missing

Perimeter is the total distance around an object. One can find the perimeter of a rectangle or square by adding all four side lengths together. These worksheets require third graders to find the missing side length, given the...

Kids are presented with the problem of finding the missing numbers to each of nine 100s squares. They'll need to subtract and add to make each puzzle equal 100. Great challenge or daily warm-up activity.

Visual models support young mathematicians as they deepen their fractional number sense in this elementary math lesson. Using fraction circle manipulatives, children explore basic unit fractions as they develop the fundamental...

Kids will compare creating fractions from pieces of paper to chips. They begin with a fractional part and work back to a whole. Then order fractions from smallest to largest. They also complete a worksheet to find the missing pieces to...

In this lesson, you will learn how to find the missing quotient in a division problem by creating an array. [2:42]

Third graders decompose an irregular polygon into arrays to find the area.

The three types of angles, right, acute, and obtuse, exist in our everyday surroundings. Students find these angles using classroom items.

This site provides six practice activities to learn how to partition a rectangle into rows and columns of same-size squares and count to find the total number of them.

I can create polygons and find the perimeter by using the unit squares on my paper

Gardening geometers construct the formula for the area of a rectangle by viewing a video revolving around two young people, their lawn mowing business, and their need to charge by the square meter. A relevant real-life application...