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Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Polygons and Areas of Plane Figures

For Students 9th - 10th Standards
Twenty-five problems cover the topics of polygons and finding the area for various plane figures. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View...
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 8.g Area of a Trapezoid

For Teachers 8th Standards
Eighth graders are given various dimensions of a trapezoid and are asked to find its area. This requires them to use the Pythagorean Theorem and to decompose the trapezoid into other polygons. Aligns with 8.G.B.7.
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Unit Plan
CK-12 Foundation

Ck 12: Geometry: Area and Perimeter of Trapezoids

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] This concept teaches students to find the area and perimeter of trapezoids. Students examine guided notes, review guided practice, watch instructional videos and...
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PPT
Sophia Learning

Sophia: Trapezoid Height and Base: Lesson 2

For Students 9th - 10th
This lesson will demonstrate how to solve for an unknown height or base of a trapezoid when given the area. It is 2 of 5 in the series titled "Trapezoid Height and Base."
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Lesson Plan
Better Lesson

Better Lesson: Finding the Area Review and Assessment

For Teachers 6th Standards
Sixth graders find the area of rectangles, triangles, parallelograms, and trapezoids by using formulas or by composing into rectangles or triangles.
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Unit Plan
Math Planet

Math Planet: Pre Algebra: Measure Areas

For Students 4th - 6th Standards
Demonstrates how to calculate the area of two-dimensional shapes using formulas. Covers parallelogram, triangle, trapezoid, and circle. Includes a video modeling how to find the area of a circle and a triangle. [0:59]
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Handout
CK-12 Foundation

Ck 12: Geometry: Perimeter and Area Study Guide

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This study guide looks at the definitions and units for perimeter, area, and circumference, and at the perimeter and area of different shapes, including regular...
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Lesson Plan
Better Lesson

Better Lesson: Area of Composite Shapes

For Teachers 6th Standards
Sixth graders take their knowledge about area of rectangles, squares and triangles and apply it to parallelograms, trapezoids, and composite shapes.
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Activity
Analyze Math

Analyze Math: Trapezoid Problems

For Students 9th - 10th Standards
The geometry tutorial examines the area, length, and vertices of a trapezoid. Topics include Heron's formula. The activity has several examples with detailed solutions.
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Unit Plan
Free Math Help

Free Math Help: Area Formulas

For Students 9th - 10th Standards
The resource consists of area formulas and diagrams for a square, rectangle, circle, triangle, and trapezoid.
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Unit Plan
Varsity Tutors

Varsity Tutors: Hotmath: Review: Area

For Students 9th - 10th Standards
Find a quick, concise explanation of area and the formulas for different shapes. An example is given to help you understand how find the area of a shape. The area formulas are listed for different types of shapes.
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Activity
Texas Instruments

Texas Instruments: Investigating Properties of Trapezoids

For Teachers 9th - 10th Standards
Students draw trapezoids and investigate their properties. They derive the area formula for a triangle from the area formula for a trapezoid. They also investigate the terms: Isosceles trapezoid and Tessellation. Numerous supplementary...
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Unknown Type
Houghton Mifflin Harcourt

Holt, Rinehart and Winston: Homework Help: Perimeter and Area of Triangles and Trapezoids

For Students 9th - 10th Standards
Get independent practice working with finding the perimeter and area of triangles and trapezoids. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
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Activity
CK-12 Foundation

Ck 12: Area and Perimeter of Trapezoids

For Students 5th - 7th Standards
[Free Registration/Login Required] Students move points on the trapezoid to get the bases and height in order to determine the area and perimeter.
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Activity
Texas Instruments

Texas Instruments: Area Formulas App

For Teachers 6th - 8th
Students review the definition and area formula for the rectangle, square, parallelogram, triangle, trapezoid, and circle.
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Activity
The Math League

The Math League: Area and Perimeter

For Students 9th - 10th Standards
This tutorial provides a brief introduction about what area is, then gives the formulas for area of a square, rectangle, parallelogram, trapezoid, triangle, and circle. Examples of each formula are provided.
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Activity
Texas Instruments

Texas Instruments: The Area of the Trapeziod

For Teachers 9th - 10th
This activity is a based on an activity I saw in Exploring Geometry with the Geometer's Sketchpad. Student will construct a trapeziod and then use rotation to create a parallelogram from the trapeziod. The follow up questions lead the...
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Study Guide
Oswego City School District

Regents Exam Prep Center: Area of Polygons and Circles

For Teachers 9th - 10th Standards
A lesson focusing on the area of polygons and the circumference of circles. Engaging, interactive practice worksheet, lesson plan, and related classroom activity complete this lesson.
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Activity
George Mason University

Area Formula Lab

For Teachers 4th - 8th Standards
In this set of worksheet activities, students will be guided to discover formulas for area of polygonal shapes and circles.
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Activity
Texas Instruments

Texas Instruments: Math Today Thirsty for Oil

For Teachers 9th - 10th
In this activity, students can use the USA TODAY Infograph 'Thirsty for oil' to explore the area of a trapezoid and determine how to find area. Students will find the area of a parallelogram and use this to determine a formula for the...
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Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Area of Trapezoids

For Students 9th - 10th Standards
Investigate how changes in the base and height of a trapezoid affect its area.
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Handout
Quia

Ixl Learning: Area of Trapezoids

For Students 6th - 7th Standards
Brush up on your math skills relating to the area of trapezoids then try some practice problems to test your understanding.
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Unit Plan
Khan Academy

Khan Academy: Area of Trapezoids

For Students 5th - 7th Standards
Practice finding the areas of trapezoids. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Handout
Quia

Ixl Learning: Trapezoids

For Students 3rd - 5th Standards
Brush up on your math skills relating to trapezoids then try some practice problems to test your understanding.

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