Texas Instruments
Texas Instruments: Investigating Properties of Trapezoids
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...
Texas Instruments
Texas Instruments: Investigating Properties of Trapezoids
This activity uses the graphing calculator to investigate trapezoids. Numerous supplementary materials are included. [Requires Adobe Reader.]
Sophia Learning
Sophia: Trapezoid Height and Base: Lesson 2
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."
Sophia Learning
Sophia: Coordinate Geometry of Trapezoids: Lesson 3
This lesson will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a trapezoid in a coordinate plane. It is 3 of 4 in the series titled "Coordinate...
CK-12 Foundation
Ck 12: Geometry: Area and Perimeter of Trapezoids
[Free Registration/Login may be required to access all resource tools.] In this lesson students calculate the area and perimeter of a trapezoid. Students examine guided notes, review guided practice, watch instructional videos and...
CK-12 Foundation
Ck 12: Geometry: Trapezoids Grades 8 10
[Free Registration/Login may be required to access all resource tools.] Apply the properties of trapezoids.
CK-12 Foundation
Ck 12: Elem Math: Identifying Ellipses and Polygons
[Free Registration/Login may be required to access all resource tools.] Students watch a video and then attempt practice problems on identifying ellipses and polygons.
CK-12 Foundation
Ck 12: Elem Math: Identifying Polygons and Ellipses
[Free Registration/Login may be required to access all resource tools.] For this learning module, students are asked to look at images and identify ellipses and different types of polygons. Includes video demonstrating a sample problem...
Varsity Tutors
Varsity Tutors: Hotmath: Graphing Calculator Practice Problems: Quadrilaterals
Practice using your graphing calculator for constructing a parallelogram, a rhombus, a kite, a trapezoid, an isosceles trapezoid, a rectangle, and a square. If you get stumped or if you would like to check your work, then select the View...
CK-12 Foundation
Ck 12: Geometry: Trapezoids Grades 9 10
[Free Registration/Login may be required to access all resource tools.] This concept will teach students to use and apply the properties of trapezoids.
CK-12 Foundation
Ck 12: Area and Perimeter of Trapezoids
[Free Registration/Login Required] Students move points on the trapezoid to get the bases and height in order to determine the area and perimeter.
National Council of Teachers of Mathematics
The Math Forum: Building Shapes
Based on building a hexagon, this activity from the Math Forum collection focuses on using different combinations of pattern blocks to create a hexagon. An online activity, pencil and paper method, literature connections, and a...
Shodor Education Foundation
Shodor Interactivate: Lesson: An Introduction to Quadrilaterals
Quadrilaterals-parallelograms, rectangles, and trapezoids-are thoroughly introduced in this lesson plan for upper elementary and middle school learners. Lots of resources are linked to it to help support the teacher and students....
Math Is Fun
Math Is Fun: Interactive Quadrilaterals
Resize and rotate different types of quadrilaterals--square, rectangle, rhombus, trapezoid, and kite--while learning the definitions of these different shapes and labeling the angles and diagonals. CCSS.Math.Content.3.G.A.1 Understand...
Oswego City School District
Regents Exam Prep Center: Area of Polygons and Circles
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.
Oswego City School District
Regents Exam Prep Center: Study of Quadrilaterals
An interesting technique is used for student viewers to learn about quadrilaterals. A viewer can meet the quadrilateral family by clicking on a link and characters will introduce themselves and tell you about their distinguishing...
Oswego City School District
Regents Exam Prep Center: Quadrilateral Family
Regents Prep displays and explains the different types of quadrilaterals.
Education Development Center
Tune in to Learning: Polygons and Perimeter
Explore different polygons and find their perimeter with this interactive lesson from T.V.411. Students see examples of polygons in everyday life and have immediate feedback to your responses to lesson questions.
Math Planet
Math Planet: Geometry: Parallelogram, Triangles Etc
Resource examines the area of geometric solids through examples and a video lesson. [0:39]
Illustrative Mathematics
Illustrative Mathematics: 5.g What Is a Trapezoid? (Part 2)
The purpose of this task is for students to compare different definitions for trapezoids. Aligns with 5.G.B.4.
Illustrative Mathematics
Illustrative Mathematics: 4.g What Is a Trapezoid? (Part 1)
The purpose of this task is for students to articulate a definition for a trapezoid. Aligns with 4.G.A.2.
CK-12 Foundation
Ck 12: Elem Math: Determining Unknown Angles in Trapezoids
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview and attempt practice problems on finding the missing angles in a trapezoid.
BBC
Bbc: Bitesize: Maths: 2 D Shapes
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.
CK-12 Foundation
Ck 12: Geometry: Trapezoids and Kites Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide looks at properties and theorems about trapezoids and kites.