Discovering Perimeters

There's a reason this worksheet is done in groups! Tricky word problems give geometry scholars a challenge as they use prior knowledge about shapes to find the area and perimeter given a few measurements. Students will enjoy discovering...

Students explore pi. In this circle measurement lesson, students define and identify radius, diameter, circumference, and perimeter. Students work in groups to measure several plastic lids and record their findings. Students compare the...

Young mathematicians explore the concept of maximizing area and minimizing perimeter in this TI-Nspire lesson. This lesson is broken up into two parts. In the first, one tries to maximize the area while keeping the perimeter constant....

Are all the measurements scalable? Pupils work in groups or alone to determine whether figures are similar and find any missing side lengths. Then, they calculate the perimeters and areas of the figures. Finally, using the measurements,...

Discover the distance all the way around. The video introduces the concept of the perimeter of a figure. An explanation shows how to find the perimeter of a variety of polygons along with regular polygons. The presentation highlights the...

Students determine how to find the perimeter of a rectangle. In this perimeter instructional activity, students make rectangles of given sizes using a 20" string. They record the the length, width, and perimeter of each rectangle. They...

Discover how to find the algebraic formula for the perimeter of a rectangle through this tutorial. Your algebra learners will be guided towards the thinking steps around this concept. After showing the video, invite your class to model...

Twelfth graders apply perimeter measurement to items found in newspapers and calculate the cost in terms of feet or yards. They share answers and explanations with classmates.

Young geometers use the interactive website Cyberchase to practice calculating both area and perimeter. Real world problems encourage learners to discover that we use math each and every day. 

Students investigate triangles as related to area and perimeter. In this geometry lesson, students investigate collaboratively different ways to find the area and perimeter of triangles, without using traditional formulas.