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19 resources with the concept irregular shapes

Videos (Over 2 Million Educational Videos Available)
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Thomas Jefferson - Author of The Declaration of Indepence & 3rd U.S. President | Mini Bio | BIO Video
Thomas Jefferson - Author of The...
Other Resource Types (19)
Lesson Planet

Area and Perimeter: Santa Style

For Teachers 4th - 6th
What a fantastic resource! The class practices finding the area and perimeter of various regular and irregular shape by first counting the grid squares inside each shape, and then by using the traditional formula. The process is fully...
Lesson Planet

Determination of Centre of Gravity of Irregular Lamina Using the Plumb-line Method

For Teachers 9th - 12th Standards
When an object, such as a boat, has a low center of gravity, it is more stable. In the first lesson of an 11-part series, scholars use plumb lines to determine the center of gravity in irregularly shaped objects. After practicing, a...
1 In 1 Collection

Surface Area II

For Students 7th Standards
Examine surface area of composite figures using an exploratory approach. As a continuation from the previous lesson of the 29-part series, young scholars develop plans for finding the surface area of composite figures. Examples become...
Lesson Planet

Shape Sorting: Looking for Green!

For Teachers Pre-K - 1st Standards
Young mathematicians rotate, flip, and sort their way to an understanding of the different attributes of geometric figures. Using transparent yellow and blue shapes, children try to match congruent figures together to create...
Lesson Planet

Area and Perimeter of Irregular Shapes

For Students 3rd - 6th Standards
Evaluate young mathematicians' understanding of area and perimeter with this series of three assessment tasks. Challenging learners to not only calculate the area and perimeter of irregular shapes, but to explain in writing their...
Lesson Planet

Awesome Area - Geometry and Measurement

For Teachers 2nd - 4th Standards
Break out those math manipulatives, it's time to teach about area! Capturing the engagement of young mathematicians, this three-activity series supports children with learning how to measure the area of squares, rectangles, and other...
Lesson Planet

A Five Day Approach to Using Technology and Manipulatives to Explore Area and Perimeter

For Teachers 3rd - 6th Standards
Young mathematicians build an understanding of area and perimeter with their own two hands in a series of interactive geometry lessons. Through the use of different math manipulatives, children investigate the properties of rectangles,...
Lesson Planet

Areas and Volumes - 2D Shapes

For Teachers 3rd - 6th Standards
Unfortunately for young mathematicians, the world isn't made entirely of parallelograms, triangles, and trapezoids. After first learning the area formulas for these common shapes, students apply this new knowledge to determine the area...
Lesson Planet

A Yin and Yang Approach to Area and Irregular Shapes

For Teachers 5th - 8th Standards
What can ancient Chinese philosophy teach young mathematicians about area? Find out with this fun hands-on investigation that uses the yin yang symbol to explore the area of irregular shapes.
Lesson Planet

Study Jams! Area of Irregular Figures

For Students 5th - 8th Standards
Painting an irregular figure can be tricky if we don't know the exact area. This interactive presentation reveals that irregular figures can be broken into smaller, simple figures that use the area formulas. Go through two examples,...
Lesson Planet

Calculate the Area of Rectangles

For Teachers 4th - 6th
A wonderful resource just waiting to be used. Provide learners with a complete explanation on how to calculate the area of a rectangle. After this process is covered, they will see how they can use rectangles to calculate the area of...
Lesson Planet

Comparing Areas

For Teachers 2nd - 3rd Standards
Before your scholars know how to multiply side lengths to find an area, give them some practice in simply counting units. They examine shapes that have already been segmented into units, counting them to get the area. There are three...
Lesson Planet

Recognize Area as Additive - Matching Worksheet

For Students 4th - 6th
Wow, that's a big pencil box! Scholars measure the area of a 15-foot pencil box among other measurement word problems. For each, they evaluate the information given to figure the area, which is sometimes not the end-all answer they are...
Lesson Planet

Perimeter and Area of Irregular Shapes

For Students 6th - 12th
In this perimeter and area of irregular shapes worksheet, students use unconventional methods such as using string, dot points, percentages, and more to find the perimeter and area of irregular shapes. Students complete 14 problems total.
Lesson Planet

Measuring an Irregular Distance

For Teachers 3rd - 6th
The math pirate needs to measure a distance on his treasure map. He realizes that he's not measuring a straight line, but an irregular distance. This short clip is well done, it uses a real-life math application, concrete mathematical...
Lesson Planet


For Teachers 3rd - 5th
Students study about perimeter and the units used to measure perimeter using a variety of materials including their hands, feet, rulers, and computer applets. They understand such attributes as length, area, weight, volume, and size of...
Lesson Planet

The Ins And Outs Of Area And Perimeter

For Teachers 5th
Fifth graders demonstrate the concept of perimeter and area using manipulative. In this area and perimeter lesson, 5th graders explore area and perimeter through the exploration style of teaching using eatable and non-eatable...
Lesson Planet

Area Of Irregular Shapes

For Students 4th - 8th
In this math worksheet, students complete 13 problems where they find the area of irregular shapes where some of the measurements are given. Examples are given in this well-designed worksheet.
Lesson Planet

Measuring Irregular Shapes

For Teachers 6th
Sixth graders practice measuring shapes that do not have a common shape. They practice using centimeter grid paper to make the measurements. Students also use estimation skills after measurements are taken.