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Lesson Plan
Better Lesson

Better Lesson: Area of Names

For Teachers 3rd
Creating names with block letters students calculate area of irregular shapes. This activity also make a real world application to the popular video game Minecraft.
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Unit Plan
Saddleback College

Algebra2go: Finding Area Problem Sets

For Students 9th - 10th
This resource has three sets of problems. Each set has six questions for finding area of irregular shapes formed by line segments. Select a problem set, then select a question. Fill in the blank with the correct answer for each problem....
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Unit Plan
Khan Academy

Khan Academy: Area of Composite Shapes

For Students 5th - 7th Standards
Practice finding the areas of complex shapes that are composed of smaller shapes. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Activity
Texas Instruments

Texas Instruments: Give Me a Hand or Leaf Me Alone

For Teachers 6th - 8th
In this activity, students' find the surface area of geometric shapes cut from card paper and relate it to its mass. They use this data to find the surface area of irregularly shaped objects.
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Activity
University of Georgia

University of Georgia: Texas Area Estimate

For Students 9th - 10th
Drawings and discussion of several methods to estimate the area of an irregular shape, like the state of Texas.
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Lesson Plan
Better Lesson

Better Lesson: Area of Irregular Polygon

For Teachers 3rd Standards
Third graders look for break apart irregular polygons to make arrays to find the area of these common shapes.
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Interactive
Mangahigh

Mangahigh: Shape: Estimate the Area of Shapes

For Students 6th - 9th Standards
Test your knowledge of determing the area of irregular shapes.
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Unit Plan
Khan Academy

Khan Academy: Decompose Figures to Find Area 2

For Students 2nd - 4th Standards
Practice decomposing irregular shapes to find their area. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. CCSS.Math.Content.3.MD.C.7.d Recognize area as additive.
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Activity
Government of Alberta

Learn Alberta: Math Interactives: Exploring Composite Figures

For Students 6th - 8th
Investigate how a variety of shapes can be used to form composite figures using this interactive Learn Alberta math resource. Students will also work on using relevant operations and formulas to figure out the total area of composite...
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Lesson Plan
Better Lesson

Better Lesson: Area in Real Life With Irregular Polygons

For Teachers 3rd Standards
Dividing an irregular shape into rectangles helps students find the area of an irregular shape.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Mg How Many Leaves on a Tree? (Version 2)

For Teachers 9th - 10th Standards
For this task, students must estimate the number of leaves on a large tree, taking into account various complex factors such as the area shaded by the tree, the area of irregularly shaped leaves, the uneven distribution of leaves, the...
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Activity
National Council of Teachers of Mathematics

Nctm: Figure This: Chocolate (Pdf)

For Students 3rd - 8th
Here's a delicious math challenge for chocolate lovers! Use your estimation and measurement skills to discover which irregular shaped, chocolate covered cookie has the largest surface area. A one-page activity from the NCTM Math...
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PPT
Sophia Learning

Sophia: Finding the Area of Composite Figures: Lesson 2

For Students 7th - 8th
This lesson explains how to break composite figures into more simple shapes in order to find its area. It is 2 of 4 in the series titled "Finding the Area of Composite Figures."
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Lesson Plan
PBS

Pbs Learning Media: Formulas: Targeted Math Instruction

For Teachers 9th - 10th Standards
At the end of this lesson plan about formulas, students will be able to identify and apply the correct formula for a given situation, solve for any unknown component of the formulas for perimeter, circumference, and area of regular and...
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Graphic
Curated OER

University of Georgia: Texas Area Estimate

For Students 9th - 10th
Drawings and discussion of several methods to estimate the area of an irregular shape, like the state of Texas.
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Graphic
Curated OER

University of Georgia: Texas Area Estimate

For Students 9th - 10th
Drawings and discussion of several methods to estimate the area of an irregular shape, like the state of Texas.
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Graphic
Curated OER

University of Georgia: Texas Area Estimate

For Students 9th - 10th
Drawings and discussion of several methods to estimate the area of an irregular shape, like the state of Texas.
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Graphic
Curated OER

University of Georgia: Texas Area Estimate

For Students 9th - 10th
Drawings and discussion of several methods to estimate the area of an irregular shape, like the state of Texas.
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Activity
TeachEngineering

Teach Engineering: A Chance at Monte Carlo

For Teachers 9th - 10th
At its core, the LEGO MINDSTORMS product provides a programmable microprocessor. Students use the EV3 processor to simulate an experiment involving thousands of uniformly random points placed within a unit square. Using the underlying...
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Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Robot Sketcher

For Students 9th - 10th
Explore this awesome tool that animates a robot that contains sliding arms (like those used in hydraulics) and rotating arms like those used in rotary motors. The exploration asks students to consider how to find the area drawn by the...
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Unit Plan
Cuemath

Cuemath: Prism

For Students 9th - 10th Standards
Explore the world of prisms in this mini-lesson by learning what are prisms, definitions with shapes and examples, the difference between regular, irregular, right, and oblique prisms, the surface area of a prism, and the volume of a...
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Graphic
Curated OER

Etc: Maps Etc: Drainage on the Laurentian Plateau, 1911

For Students 9th - 10th
A map from 1911 of a portion of the Laurentian Plateau region of North America showing the drainage and lake network west of Lake Nipigon. The map shows the division line for waters flowing to the Albany and the Winnipeg river systems,...
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Graphic
Curated OER

Educational Technology Clearinghouse: Maps Etc: South China, 1971

For Students 9th - 10th
"South China comprises the drainage basins of the middle and lower Yangtze River, the basin of the His Chiang (West River) in Kwangtung and Kwangsi; and the mountainous coastal provinces of Fukien and Chekiang. The division between the...
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Graphic
Curated OER

Nova Scotia, New Brunswick, Prince Edward Island, and Newfoundland, 1903

For Students 9th - 10th
A map from 1903 of the Canadian Maritime Provinces of New Brunswick, Nova Scotia, Prince Edward Island, and an inset of Newfoundland. The map shows province and county borders, rivers, cities, and railroads. "New Brunswick, a province of...

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