Activity
Curated OER

Finding the Area of Polygons

For Teachers 3rd Standards
Third graders are exposed to finding the area of polygons by decomposing figures and recomposing them into rectangles. This strategy allows children to expand on their prior knowledge of constructing shapes by rearranging parts into...
Lesson Plan
Curated OER

Picture Board

For Teachers 2nd - 4th Standards
Learners divide a poster board so everyone gets the same amount of area to decorate. Youngsters talk about the different ways to divide a rectangle. They measure their lines to make sure that each piece is equal and then decorate their...
Lesson Plan
Curated OER

Sharing Brownies: Fractions That Represent a Fair Share

For Teachers 3rd - 4th
Elementary graders discover the concept of fractional pieces of a whole. They investigate the meanings of fractions in everyday life and why they are used. Pupils divide brownies amongst each other to demonstrate the use of fractions...
Lesson Plan
Curated OER

Fraction Strips

For Teachers 4th - 5th
Get a handle on equivalent fractions through the use of manipulatives. Using area models, sets, and length manipulatives like fraction strips and Cuisenaire rods, the class will gain a deeper understanding of equivalent fractions....
Lesson Plan
Curated OER

Fractions Describe Parts of a Whole

For Teachers 3rd
Third graders represent fractions as part of a whole. In this fractions lesson, 3rd graders use manipulatives to show how a fraction is a part of a whole. This lesson includes individual practice and an assessment instead of direct...
Lesson Plan
Curated OER

Fractions of a Set

For Teachers 3rd
Third graders use fractions to describe part of a set. In this fractions lesson, 3rd graders are introduced to fractions through a book and use pattern blocks to describe a fraction as a part of a set. This lesson includes a scripted...
Unknown Type
Khan Academy

Khan Academy: Cutting Shapes Into Equal Parts

For Students 2nd - 5th Standards
In this exercise, students practice cutting shapes into equal parts. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly. CCSS.Math.Content.3.G.A.2 Partition shapes into parts with equal...
Unit Plan
Khan Academy

Khan Academy: Identify Unit Fractions

For Students 2nd - 4th Standards
Identify unit fractions when given a visual or a context. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video tutorial, receive hints. CCSS.Math.Content.3.G.A.2 Partition shapes into...