Perimeter-Area Websites

K-2

Everything You Wanted to Know About Perimeter and Area
A very colorful site with nice explanations of how to calculate both perimeter and area. Then students can practice calculating both on three different levels of difficulty.

Bucky's Geometry Workshop
NOTE: This is no longer a free site. On this excellent and colorful site are 6 different topic areas including "Angles and Triangles" and "Perimeters and Areas." Each activity has its own workspace with drawing and measuring tools. You can create as many separate pages as you like. You can also click on "Give Me A Challenge" in the upper right corner of the work area and be presented with a multiple choice question related to the topic you are investigating. Bucky reads each question aloud and provides encouraging audio feedback. You will want to explore each topic to determine the appropriate grade level.

Find the Area
A rectangle with random dimensions is generated. Students can use the area formula and type in their answer, OR cover the rectangle with unit squares and count to get their answer.

3-5

Perimeter Explorer
This site generates a random shape for measuring perimeter. You can check a box that will generate rectangles, or you may keep the irregular shapes. You can also control the area of the shape generated with a slider control. This site will also generate a chart that compares the perimeters and areas of the various shapes. Answers may be entered using the onscreen keypad.

Area Explorer
From the same collection as Perimeter Explorer, this site generates a random shape for measuring area. You can check a box that will generate rectangles, or you may keep the irregular shapes. You can also control the area of the shape generated with a slider control. This site will also generate a chart that compares the perimeters and areas of the various shapes. Answers may be entered using the onscreen keypad.

Geoboard
After creating a shape with "rubber bands" on this virtual Geoboard, you may click on the "Measures" button to see the area and perimeter of the shape.

Everything You Wanted to Know About Perimeter and Area
A very colorful site with nice explanations of how to calculate both perimeter and area. Then students can practice calculating both on three different levels of difficulty.

Bucky's Blueprints
NOTE: This is no longer a free site. Although this site, IKnowThat.com is ad sponsored, and you are prompted to log-in as a free subscriber, you may use the site for free. In Bucky's Blueprints, students may choose from a list of 6 structures to build. The structures start with a one story house and students must calculate the area or perimeters of various rectangular shapes such as roofs, doors, and windows. The more advanced buildings require students to calculate the perimeters and areas of shapes other than rectangles, and the dimensions are in mixed units, such as feet and inches. There is an on-screen calculator provided for students to use, and a "Hint" button will remind the students of the formula they need to use to determine the correct answer.

Bucky's Geometry Workshop
NOTE: This is no longer a free site. On this excellent and colorful site are 6 different topic areas including "Angles and Triangles" and "Perimeters and Areas." Each activity has its own workspace with drawing and measuring tools. You can create as many separate pages as you like. You can also click on "Give Me A Challenge" in the upper right corner of the work area and be presented with a multiple choice question related to the topic you are investigating. Bucky reads each question aloud and provides encouraging audio feedback. You will want to explore each topic to determine the appropriate grade level.