# Area of Irregular Shapes Teacher Resources

Find Area of Irregular Shapes lesson plans and worksheets

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Curated OER

#### Areas of Irregular Shapes

In this geometry worksheet, students practice estimating the area of irregular shapes. There are 5 questions on this worksheet in which they must estimate areas.

Curated OER

#### Recognize Area as Additive - Matching Worksheet

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...

Curated OER

#### Area of Irregular Shapes

In this irregular shapes learning exercise, 10th graders solve 10 different problems that include determining the area of various irregular shapes as shown in each. First, they divide each figure into familiar shapes. Then, students...

Curated OER

#### Area Of Irregular Shapes

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.

Government of Hong Kong

#### Areas and Volumes - 2D Shapes

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...

Curated OER

#### Area Explorations

Students explore the concept of area. For this area lesson, students find the area of irregular shapes with right angles. Students break down each irregular shape into multiple regular shapes in order to find the area. Students...

Curated OER

#### Footprints: Take a Step into Estimation

Compare sizes of student footprints with those of elephants and sauropod dinosaurs! Upper graders make estimations of the areas of irregular shapes; students use grids to make and explain estimates within low and high ranges.

Krista King Math

#### Area of Rectangles Using Sums and Differences

Use the formula for the area of a rectangle for more than just rectangles! Scholars see that they can use common area formulas to find the area of irregular shapes.

Curated OER

#### Calculate the Area of Rectangles

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...

Curated OER

#### Comparing Areas

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...

Curated OER

#### Geometry Practice: Area of Polygons #9

In this area of polygons worksheet, students find the area of 12 polygons. Each shape is drawn on a grid. The area of each square on the grid is given. Problems are all multiple choice.

Curated OER

#### Math Worksheet: Area (3)

For this area worksheet, students find the area of one irregular polygon. Students find the area by dividing the irregular polygon into multiple regular polygons.

Curated OER

#### Gotcha Covered, Pardner!

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.

National Security Agency

#### Awesome Area - Geometry and Measurement

Break out those math manipulatives, it's time to teach about area! Capturing the engagement of young mathematicians, this three-lesson series supports children with learning how to measure the area of squares, rectangles, and other...

University of Utah

#### Geometry Part 2: Measurement in 2- and 3-Dimensions, Plane Sections of Solids

What kind of tree does a math teacher climb? A geometry! Here is a lesson that includes all the geometry resources you could ever wish for in one comprehensive workbook. Class members demonstrate what they have learned by determining the...

Curated OER

#### Does Sunlight Effect Leaf Size?

Young scholars make estimates and then measure leaves for accuracy. They calculate the area of the leaves by drawing an outline on graph paper and counting the squares. They compare the leaves exposed to sunlight to those that are in...

Pennsylvania Department of Education

#### Multiplication Using Arrays

Explore the concept of multiplication by using arrays. Classmates use arrays to gain a better understanding of multiplication. They break arrays apart to model the distributive property of multiplication over addition. The relationship...

Curated OER

#### The Good, The Bad, The Ugly

Sixth graders examine the causes of the stock market crash of 1929. In this integrated math/history unit on the stock market, 6th graders study, research, and read stocks, visit a local bank, and create a PowerPoint to show the finished...

Curated OER

#### Exploring Areas of Irregular Polygons

Students solve for the area of different polygons. In this geometry lesson plan, students identify and differentiate between regular and irregular polygons. They use properties of irregular polygons to solve problems.

Curated OER

#### Animal Tracks

Students are introduced to the topic of area. In groups, they share various techniques to help them identify different shapes and work together to calculate the area. They use this same knowledge to determine the area of animal tracks...

Curated OER

#### Perimeter

Students explore the concept of perimeter. In this perimeter lesson, students discuss how to find perimeter of various shapes. Students use the Perimeter Explorer applet to find the perimeter of various shapes.

Curated OER

#### Area Explorations

Learners explore the area of rectangles. They practice finding area by playing an onliine computer activity where they calculate the area of a rectangle to solve a problem.

Curated OER

#### Hickory Dickory Dock

Students follow written directions to construct their own tangram. In this tangram lesson plan, students use their tangram to develop original figures that illustrate characters and/or objects from their favorite nursery rhyme. Students...

Curated OER

#### Exploring Areas

Fifth graders use the activities provided on a web site to calculate the area of an object.