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### We found 166 reviewed resources for area of irregular shapes

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Lesson Planet

#### Math Antics Geometry Video Lessons

The point of this collection of 12 videos is to introduce learners to three basic parts of geometry—points, lines, and planes. The presenter provides definitions, shows how to classify shapes, provides examples, and shows how to use...

Lesson Planet

#### 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.

Lesson Planet

#### 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...

Lesson Planet

#### Area and Perimeter: Santa Style

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

#### Area and Perimeter of Irregular Shapes

Evaluate young mathematicians' understanding of area and perimeter with this series of three assessment tasks. Challenging students to not only calculate the area and perimeter of irregular shapes, but to explain in writing their...

Lesson Planet

#### 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...

Lesson Planet

#### 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...

Lesson Planet

#### Study Jams! Area of Irregular Figures

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

#### Areas of Geometric Shapes with the Same Perimeter

A triangle, square, hexagon, and circle all have a perimeter of one unit. Eighth graders must attempt to find the area of each and arrange them in order from least to greatest areas. A terrific task for applying four different area...

Lesson Planet

#### 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...

Lesson Planet

#### 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...

Lesson Planet

#### Area and Perimeter

Get third graders excited to work find area and perimeter of unit squares, rectangles, and irregular shapes. A 36-page packet comes with task cards, graphic organizers, practice worksheets, printables with squares, exit tickets, and word...

Lesson Planet

#### Estimating the Area of a Reservation

Fifth graders estimate the area of an Indian Reservation. In this area lesson students find the approximate area in square miles of Flathead Reservation. The students work with irregular shapes of areas.

Lesson Planet

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

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

#### Area Of Irregular Shapes

In this math worksheet, learners 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

#### Irregular Shape Area-Polygons

Young scholars find the area of irregular shaped polygons. In this geometry lesson, students identify the different shapes of a polygon and use the best method to find the area on a coordinate plane.

Lesson Planet

#### Area and Perimeter of Regular and Irregular Polygons

Extend young mathematicians' understanding of area with a geometry lesson on trapezoids. Building on their prior knowledge of rectangles and triangles, students learn how to calculate the area of trapezoids and other irregular...

Lesson Planet

#### Area of Irregular Shapes

In this irregular shapes worksheet, 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 determine...

Lesson Planet

#### Perimeter, Area, and Volume

After providing your learners with a pre-assessment, group learners by ability level. Groups develop and use strategies to find perimeter of regular or irregular shapes using string, paper clips, links, and other objects. They find the...

Lesson Planet

#### Estimating Area

How do you find areas of irregular shapes? Scholars use a given diagram of a lake to estimate its area. Using shapes with known area formulas helps with this estimation.

Lesson Planet

#### Triangle Area

While the instructional activity focuses on right triangles, this activity offers a great way to practice the area of all triangles through an interactive webpage. The activity begins with the class taking a square paper and cutting in...

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#### 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.

Lesson Planet

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

When an object, such as a boat, has a low center of gravity, it is more stable. In the first instructional activity of an 11-part series, scholars use plumb lines to determine the center of gravity in irregularly shaped objects. After...

Lesson Planet

#### The Ins And Outs Of Area And Perimeter

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...