Interactive
Shodor Education Foundation

Shodor Interactivate: Lesson: Area Explorations

For Teachers 3rd - 5th Standards
In this lesson students will practice finding the area of irregular shapes with right angles and understand that there are different methods for calculating area.
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.
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.
Interactive
Shodor Education Foundation

Shodor Interactivate: Area (Elementary)

For Teachers 2nd - 5th Standards
In this lesson students will practice finding the area of rectangular shapes and irregular shapes with right angles and understand why the area formula works for rectangular shapes. CCSS.Math.Content.3.MD.C.5.b A plane figure which can...
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.
Interactive
Mangahigh

Mangahigh: Shape: Estimate the Area of Shapes

For Students 6th - 9th Standards
Test your knowledge of determing the area of irregular shapes.
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.
Interactive
Shodor Education Foundation

Shodor Interactivate: Lesson: Area (Elementary)

For Teachers 3rd - 5th Standards
In this lesson students will practice finding the area rectangular shapes and irregular shapes with right angles and understand why the area formula works for rectangular shapes.
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....
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...
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.
Lesson Plan
Illustrative Mathematics

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

For Teachers 9th - 10th Standards
In 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...
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.
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...
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...
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...