What makes an equilateral triangle equilateral? It turns out it's much more than just the side lengths! Learners analyze four different triangles to determine the best equilateral triangle. They create a formula that they later use to...

One cyclist goes to great lengths to make his proposal! Your classes must figure out just what length that is. Using a map with a bike route that spells out Marry Me, learners calculate the total distance of the ride. They base their...

Seventh graders find the perimeter and area of triangles.  In this finding the perimeter and area of triangles lesson plan, 7th graders find the perimeter and area of triangles given two sides.  Students find the missing side...

In this right triangles worksheet, 10th graders solve and complete 12 various types of problems. First, they solve for x given each of the right triangles shown. Then, students determine the length of the shorter diagonal given the...

In this right triangles worksheet, 10th graders solve and complete 14 various types of problems. First, they find the perimeter of the isosceles trapezoid shown. Then, students find the measures of each marked side of a right triangle....

Explain algebraic relationships through an understanding of area and perimeter. Continuing concepts built in the third instructional activity of the series, the fourth installment of 28 asks learners to identify common expressions...

In this equations and inequalities worksheet, 9th graders solve and complete 14 different multiple choice problems. First, they name an example of the commutative property of addition. Then, students use the distance formula to determine...

Fifth graders practice solving word problems using highlighted strategies. In this word problem lesson, 5th graders brainstorm and  use words as clues that indicate the math operations that will be used to solve problems. They use...

Here is a presentation that's chock full of great tips on how to memorize multiplication facts, and how to calculate the area of shapes that aren't perfect squares or rectangles. Many good problems are in each of the slides. A great...

In this area and perimeter worksheet, learners follow detailed instructions about measurements, drawing rectangles on a dotted grid, then find the perimeter and area of each rectangle. 

In this TAKS math quiz worksheet, students take an online quiz focused on finding area of shapes. Quiz can be graded online by clicking a link.

Eighth graders discuss perimeter by relating it to the path they would take while walking their dog around a park. They find the perimeter of regular polygons and one irregular polygon. Students use graph paper to draw their own examples...

In this finding the perimeter and area of irregular figures worksheet, students review the steps for each calculation and solve the problems. Students solve both perimeter and area for seven problems.

In this perimeter worksheet, students find the perimeter of a set of 6 "rugs," then circle the one that has the same perimeter as the rug at the top of the page.

Sixth graders solve for the area and perimeter. In this geometry instructional activity, 6th graders investigate polygons and use a formula to find the area and perimeter. They find the area and perimeter of various polygons.

In this area and perimeter worksheet, students find each for a set of 6 compound shapes. An answer key is included on page 2.

In this area and perimeter learning exercise, learners find each for 6 given shapes. A website reference for additional resources and an answer key are provided.

In this perimeter formula worksheet, learners solve a set of 6 word problems related to the perimeter of various shapes, then tell how they arrive at the answer.

In this area/perimeter instructional activity, students find perimeter and area of 6 given triangles. An answer key is included on page 2.

In this perimeter worksheet, students use sets of grids to calculate the perimeter of shaded areas in units. A reference web site is given for additional activities.

Student sinvestigate the area and perimeter of polygons. They differentiate between similar and congruent polygons.. They identify the ratio and proportions of the sides and angles of polygons.

In this area and perimeter worksheet, students find each for a set of 6 rectangles. A website reference for additional resources and answer key are provided.

In this geometry instructional activity, 10th graders determine the area and perimeters of various quadrilaterals and triangles.  The one page instructional activity contains ten problems.  Answers are not provided. 

In this perimeter activity, students calculate the perimeter and find given values of 6 figures. A reference web site is given for additional activities.