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Activity
CK-12 Foundation

Ck 12: Area and Perimeter of Similar Polygons

For Students 5th - 7th
[Free Registration/Login Required] Students move points to make diagonals in order to solve for area and perimeter of polygons. Click challenge me to answer practice questions.
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Unknown Type
University of Waterloo (Canada)

University of Waterloo: Cemc: Math Circles: 3 D Geometry Ii [Pdf]

For Teachers 9th - 10th Standards
This worksheet provides a variety of 3D geometry questions requiring higher order thinking skills. Questions include; finding the surface area of a prism, surface area of pyramid, surface area of a sphere, and platonic solids.
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Whiteboard
ClassFlow

Class Flow: Braun Polygons

For Teachers 9th - 10th Standards
[Free Registration/Login Required] This flipchart is a simple diagram showing the sides and triangles in a polygon.
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Interactive
Calculator Soup

Calculator Soup: Regular Polygon Calculator

For Students 9th - 10th Standards
Use this calculator to calculate properties of a regular polygon. Enter any 1 variable plus the number of sides or the polygon name. Calculates side length, inradius, circumradius, area, and perimeter.
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Unit Plan
Shmoop University

Shmoop: Basic Geometry: Area Formulas

For Students 9th - 10th Standards
The geometry resource investigates the area of polygons, triangles, circles, and squares. Formulas, examples, and practice exercises are included.
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Unit Plan
Vernet -Virtual Education Resources Network

Salon Hogar: Referencia Rapida De Formulas Geometricas

For Students 9th - 10th Standards
This site provides the user with a useful reference to different geometric forms, their elements, formulas, and areas. Entirely in Spanish.
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Unknown Type
Illustrative Mathematics

Illustrative Mathematics: 3.md Shapes and Their Insides

For Teachers 2nd - 4th Standards
The purpose of this task is to help students differentiate between a polygon and the region inside of a polygon so that they understand what is being measured when the perimeter and area are being found. Aligns with 3.MD.D.
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Activity
TOPS Learning Systems

Top Science: Go Figure! [Pdf]

For Students 3rd - 8th Standards
This is a classic area puzzle where polygon shapes are rearranged, giving what seems to be a different total area. Students must try to determine why there is a discrepancy.
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Lesson Plan
Writing Fix

Writing Fix: Shape "Monsters" at Night

For Teachers Pre-K - 1st
Using Melanie Watt's book entitled Scaredy Squirrel at Night, this multi-day lesson plan allows students to apply information about Scaredy Squirrel's night time experiences and its fears as their final product model. Students will...
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Unknown Type
Khan Academy

Khan Academy: Find Perimeter When Given Side Lengths

For Students 3rd - 5th Standards
In this exercise, students practice finding perimeter when given side lengths. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly. CCSS.Math.Content.3.MD.D.8 Solve real world and...
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Unit Plan
Khan Academy

Khan Academy: Perimeter Word Problems

For Students 2nd - 4th Standards
Practice solving real world word problems involving perimeter. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. CCSS.Math.Content.3.MD.D.8 Solve real world and...
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Lesson Plan
Alabama Learning Exchange

Alex: Students Only! No Teachers Aloud

For Teachers 3rd - 5th
The students will be introduced to area and perimeter. The teacher will pose a real-life situation in which the students will have a chance to explore an actual section outside to determine the area and perimeter of a set location.
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Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Perimeter With Side Lengths

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] Students practice calculating the perimeter of various polygons.
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Unit Plan
BBC

Bbc: Bitesize: Maths: 2 D Shapes

For Students 2nd - 8th Standards
Learn about the properties of 2-D shapes: circles, triangles, polygons, and quadrilaterals. Includes information, video, and examples about each, with games and quizzes for reinforcement.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 6.g Same Base and Height, Variation 1

For Teachers 5th - 8th Standards
Make the following triangles on a geoboard. Remember that the pegs are equally spaced in a square grid. Compare the areas of the triangles. Aligns with 6.G.A.1.
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Unit Plan
Wolfram Research

Wolfram Math World: Math World: Hexagon

For Students 9th - 10th Standards
Gives a detailed overview of hexagons, particularly of regular hexagons. Be sure to use the links for unfamiliar notation or variable representation. This site gives formulas for inner radius, circumradius, parameter, and area of a...
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Unknown Type
Illustrative Mathematics

Illustrative Mathematics: 4.oa, Md Karl's Garden

For Teachers 3rd - 5th Standards
The purpose of the task is for students to solve a multi-step multiplication problem in a context that involves area. Aligns with 4.MD.A.3.
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Lesson Plan
Alabama Learning Exchange

Alex: Swimming Pool Math

For Teachers 9th - 10th Standards
Young scholars will use a swimming pool example to practice finding perimeter and area of different rectangles.
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Whiteboard
ClassFlow

Class Flow: Polygon Review

For Teachers 6th - 8th Standards
[Free Registration/Login Required] This flipchart provides a review of polygons and formulas for calculating perimeter and area in the form of assessment questions.
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eBook
Mathigon

Mathigon: Geometry: Polygons and Polyhedra: Quadrilaterals

For Students 9th - 10th Standards
This lesson focuses on quadrilaterals which can fall into multiple categories based on the number of sides and the angles.
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PPT
Sophia Learning

Sophia: Using Right Triangle Trigonometry to Find the Area of Regular Polygons

For Students 9th - 10th Standards
This lesson will demonstrate how to use right triangle trigonometry and special right triangles (45-45-90 and 30-60-90) to find the area of triangles given the side lengths of the polygon. It is 2 of 4 in the series titled "Using Right...
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Unit Plan
Sophia Learning

Sophia: Using Right Triangle Trigonometry to Find the Area of Regular Polygons

For Students 9th - 10th Standards
This lesson will demonstrate how to use right triangle trigonometry and special right triangles (45-45-90 and 30-60-90) to find the area of triangles given the side lengths of the polygon. It is 4 of 4 in the series titled "Using Right...
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Unit Plan
Khan Academy

Khan Academy: Find Perimeter When Given Side Lengths

For Students 2nd - 4th Standards
Find perimeter of figures when given an image or context. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. CCSS.Math.Content.3.MD.D.8 Solve real world and...
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eBook
Math Planet

Math Planet: Geometry: Parallelogram, Triangles Etc

For Students 9th - 10th Standards
Resource examines the area of geometric solids through examples and a video lesson. [0:39]

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