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Khan Academy
Khan Academy: Find Perimeter When Given Side Lengths
Find perimeter of figures when given an image or context. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. CCSS.Math.Content.3.MD.D.8 Solve real world and...
Math Open Reference
Math Open Reference: Perimeter of a Polygon
Learn about the perimeter of a polygon with this resource which offers detailed explanations, examples, and an interactive. Subjects covered include how to find the perimeter. Links to related topics.
Math Open Reference
Math Open Reference: Area of a Square
A complete reference guide to finding the area of a square. It provides definitions, examples, and interactive activities that enhance further explanation. Includes links to related topics.
Scholastic
Scholastic Lesson Plan: New Way to Measure Area
This article describes a new approach to teaching children more than just memorizing a formula to find area and hope they don't confuse it with perimeter. This approach involves a project with real life situations....
Writing Fix
Writing Fix: Shape "Monsters" at Night
Using Melanie Watt's book entitled Scaredy Squirrel at Night, this multi-day activity allows students to apply information about Scaredy Squirrel's night time experiences and its fears as their final product model. Students will create...