This is a very interesting site about polygons. The site begins by distinguishing between shapes whose sides intersect and polygons whose sides do not overlap. After this short introduction, you will find information regarding area and...

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....

Count unit squares and partial unit squares to find the area of shapes.

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...

[Free Registration/Login may be required to access all resource tools.] In this lesson students find the area of parallelograms given the base and the height. Students examine guided notes, review guided practice, watch instructional...

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...

Sixth graders find the area of rectangles, triangles, parallelograms, and trapezoids by using formulas or by composing into rectangles or triangles.

Sixth graders use the area formula for rectangles to solve real world and mathematical problems.

To find the area of a triangle, try to make a parallelogram using a copy of the triangle.

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.

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.

Use this calculator to find the sides, perimeter, area, semiperimeter, and altitude of an isosceles triangle.

Use this calculator to find the unknown angles in a right triangle using the Pythagorean Theorem. Once you know the sides you can calculate the perimeter, semiperimeter, area, and the altitudes.

Using decimals and finding perimeter and area all while learning about the metric system.