Unit Plan
CPALMS

Cpalms: Area of Rectangles: A More Efficient Way?

For Teachers 3rd - 5th Standards
[Free Registration/Login Required] In this lesson, students will connect the concepts of counting each square unit and multiplying the side lengths to compute the area of a rectangle. They will extend this knowledge by computing a side...
Activity
Homeschool Math

Homeschool Math: Area of Rectangles

For Teachers 4th - 6th Standards
This lesson contains a video lesson [9:28] and various exercises about the area of rectangles, common units of area, two-part rectangles and the distributive property, and shapes composed of rectangular areas.
Lesson Plan
Better Lesson

Better Lesson: Finding the Area Review and Assessment

For Teachers 6th Standards
Sixth graders find the area of rectangles, triangles, parallelograms, and trapezoids by using formulas or by composing into rectangles or triangles.
Unit Plan
Khan Academy

Khan Academy: Create Rectangles With a Given Area

For Students 2nd - 4th Standards
Practice finding the area of rectangles by counting unit square. Create rectangles with a given area by covering unit squares. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video...
Unit Plan
Texas Education Agency

Texas Gateway: Determining Area of Composite Figures

For Students 7th - 8th
Given composite figures (combinations of rectangles, squares, parallelograms, trapezoids, triangles, semicircles, and quarter circles), students will be able to determine expressions for the area as well as calculate the area of the figure.
Activity
University of Regina (Canada)

University of Regina: Math Central: Irregular Surface Area Exercise

For Students 9th - 10th Standards
Students will be engaged by this assignment that has them estimating the areas of irregular surfaces. This includes computing the area of rectangles, triangles, and circles.
Lesson Plan
Better Lesson

Better Lesson: Finding the Area of a Rectangle

For Teachers 6th Standards
Sixth graders use the area formula for rectangles to solve real world and mathematical problems.
Unknown Type
Khan Academy

Khan Academy: Find Area With Partial Unit Squares

For Students 6th - 8th
Count unit squares and partial unit squares to find the area of shapes.
Activity
National Council of Teachers of Mathematics

Nctm: Illuminations: Igd: Area of a Parallelogram

For Students 3rd - 8th Standards
This applet will show you how to divide the parallelogram into pieces, arrange them together to form a rectangle, and then use the formula for the area of a rectangle to find the area of the parallelogram.
Handout
Math Open Reference

Math Open Reference: Perimeter of a Rectangle

For Students 9th - 10th
Learn about the perimeter of a rectangle with this handy reference guide. Provides a detailed definition, examples, and interactive activities that enhance further explanation. Includes links to related topics.
Handout
Homeschool Math

Homeschool Math: Fraction Multiplication and Area

For Students 4th - 6th Standards
This fifth-grade lesson explores the area of a rectangle with fractional side lengths. We tile the rectangle with unit rectangles and show that the area is the same as would be found by multiplying the side lengths. We multiply...
Interactive
Calculator Soup

Calculator Soup: Rectangle Calculator

For Students 9th - 10th
Use this calculator if you know 2 values for the rectangle, including 1 side length, along with area, perimeter, or diagonals and you can calculate the other 3 rectangle variables. A square calculator is a special case of the rectangle...
Handout
Homeschool Math

Homeschool Math: Area of Right Triangles

For Students 6th - 8th
This lesson presents the idea that the area of any right triangle is exactly half of a certain rectangle, and contains varied exercises for students.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 6.ee Rectangle Perimeter 3

For Teachers 5th - 8th Standards
The purpose of this task is to ask students to write expressions and to consider what it means for two expressions to be equivalent. Aligns with 6.EE.A.
eBook
Mathigon

Mathigon: Geometry: Polygons and Polyhedra: Quadrilaterals

For Students 9th - 10th Standards
This lesson focuses on quadrilaterals which can fall into multiple categories based on the number of sides and the angles.
Lesson Plan
Alabama Learning Exchange

Alex: Pump Up the Volume

For Teachers 6th - 7th Standards
In this instructional activity, learners will be required to generate a formula for volume of a rectangular prism. Students working in cooperative groups will use prior knowledge for finding area of a rectangle to determine the "amount...

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