CK-12 Foundation
Ck 12: Elem Math: Perimeter in Grid
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on how to find the perimeter of a shape using a grid.
PBS
Pbs Learning Media: Calculating Rectangular Area
In this video segment from Cyberchase, the CyberSquad measures Judge Trudy's land claim by using tarps, fence posts and a grid made with rope.
CK-12 Foundation
Ck 12: Elem Math: Area in Grid
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview and attempt practice problems on how to find the area of a shape using grids.
Texas Instruments
Texas Instruments: Geoboard and Area
In this activity, students find areas of figures which are displayed on a grid. They also use the Geoboard application to find areas of figures they draw.
Khan Academy
Khan Academy: Area and Perimeter on the Coordinate Plane
Find the area and perimeter of quadrilaterals using their coordinates. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Other
University of Akron: Research Challenges Location of 'Tornado Alley'
Geographer Michael Frates redefines the concept of Tornado Alley by using a grid system to map tornado activity in the U.S. Download the Tornado Alley map and locate the other tornado active areas: Hoosier Alley, Dixie Alley and the...
PBS
Pbs Teachers: Soak It Up [Pdf]
Compare three prototypes of paper towels using strategies to find the best value in terms of cost and quality. Determine the surface area of a water stain on a paper towel using a transparent grid.