Activity
Texas Instruments

Texas Instruments: Cross Fencing Pastures

For Teachers 6th - 8th
In this activity, students use the Geoboard to determine the areas of polygons by dissecting them into parts that are squares, rectangles, and triangles.
Activity
Texas Instruments

Texas Instruments: Greatest Area Activity

For Teachers 6th - 8th
A classic problem looking at maximizing the area of rectangles given fixed perimeters. Uses graphing calculators to analyze data collected and to model a parabolic equation. Compiling class data provides a preliminary glance at families...
Activity
K-5 Math Teaching Resources

K 5 Math Teaching Resources: Comparing Rectangles [Pdf]

For Students 2nd - 3rd
Comparing Rectangles is a learning activity that applies skills that compare rectangles.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Area and Perimeter of Squares and Rectangles

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on the area and perimeter of rectanlges and squares.
Activity
BBC

Bbc: Area in General

For Students 4th - 7th Standards
You can pick up some valuable pointers on how to find the area of a triangle, rectangle, and other quadrilaterals. When you finish working your way through the pages you can take an on-line "Test Bite," and check your understanding.
Unit Plan
Khan Academy

Khan Academy: Area of Rectangles

For Students 2nd - 4th Standards
Find area of rectangles and squares by multiplying side lengths. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 6.rp Converting Square Units

For Teachers 6th Standards
For this task, 6th graders must inches to feet in order to find the area of a rectangular board and explain the error in the calculations made by the board owner. Aligns with 6.RP.A.3.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 6.g Painting a Barn

For Teachers 6th Standards
This task asks students to determine the area of the exterior walls of a barn and to calculate how many gallons of paint would be needed to cover them, as well as the cost of the paint. Aligns with 6.G.A and 6.RP.A.3.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Partitioning Composite Figures Into Rectangles to Find Area 1

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] In this learning module, students are asked to partition a shape into rectangles and add their areas together to get the area of the whole figure. Includes video...