CK-12 Foundation
Ck 12: Geometry: Angle Measures in Given Quadrilaterals
[Free Registration/Login may be required to access all resource tools.] Find the degree measure of unknown angles in given quadrilaterals.
CK-12 Foundation
Ck 12: Geometry: Quadrilateral Classification
[Free Registration/Login may be required to access all resource tools.] Classify different types of quadrilaterals by their angles and side lengths.
Geometry Help
Geometry Help: Rhombus
Explains the basic concept of a rhombus with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
Geometry Help
Geometry Help: Rectangles
Explains the basic concept of a rectangle with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
That Quiz
That Quiz: Practice Test: Shapes
This resource provides a practice geometry quiz for students to use.
CPALMS
Cpalms: Building Graduation Caps
[Free Registration/Login Required] In this activity, students build geometric models of graduation caps using stiff paper. The activity requires the application of skills in finding surface area, understanding similarity, knowing the...
PBS
Pbs Learning Media: Skateboarding
In this video segment from Cyberchase, Bianca injures her ankle while skateboarding and is confined to her bed. She has trouble reaching a few objects from her bed until her friend gives her a device made up of collapsible...
Quia
Quia: Geometric Terms Matching
Do you need practice remembering or learning different geometry vocabulary words and definitions? This matching game is the web site for you! There is a link to a list of terms with definitions you can click if you want to see if you are...
Shodor Education Foundation
Shodor Interactivate: Transmographer
Shodor Education Foundation provides an applet that "allows the user to explore the world of transformations, reflections, and rotations. It allows the user to translate triangles, squares, and parallelograms on both the x and y-axes."
McGraw Hill
Glencoe Mathematics: Online Study Tools: Self Check Quiz on Quadrilaterals
The online assessment demonstrates knowledge of concepts utilized in Geometry. The multiple choice questions test students on quadrilaterals. Topics include rhombus, parallelogram, and interior angles.
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 students. Lots of resources are linked to it to help support the teacher and students....
Maths Challenge
Maths challenge.net: Platonic Solids
A "three star geometry problem" requiring knowledge of how to complete geometric proofs to prove that there are no more than five regular convex polyhedra.
Alabama Learning Exchange
Alex: "Tan"
The Chinese character mark formerly known as "Tan" is the first of two lessons to introduce first grade students to geometry using tangrams. This lesson plan incorporates history, math, and language arts. In this lesson plan students...
Alabama Learning Exchange
Alex: Geometrica Fights Back!
This activity is designed to give students practice with the properties of special quadrilaterals (parallelograms, rectangles, rhombuses, squares, trapezoids, and kites). The students are provided with a "murder mystery" sheet with...
National Council of Teachers of Mathematics
The Math Forum: Using Geoboards in the Classroom
A thorough look at the extensive uses of geoboards in the classroom. Links are listed which give introductory information on geoboards - for teachers new to using them. Then, lesson plans are provided for using geoboards in teaching...
Other
Ic Teachers: Shapes Quadrilaterals
Are you looking for a very basic website that will explain the basic properties of a quadrilateral? Use this site to learn about the properties of a square, rhombus, rectangle, parallelogram, trapezoid, and kite. There are also some...
Purple Math
Purplemath: Determinant Word Problems
Matrix determinants can be used to solve many algebra and geometry word problems. Among them: finding the area of a triangle, finding the area of a parallelogram, and finding the equation of a line between two points. These three...
ClassFlow
Class Flow: Two Dimensional Shapes Identify and Match
[Free Registration/Login Required] This flipchart helps students to analyze and compare various two-dimensional shapes according to the vertices, sides and parallel lines. It features "containers" created in Version 3 (can be used with...
Cuemath
Cuemath: Quadrilaterals
Explore the world of quadrilaterals and their properties. Find answers to questions like what are quadrilaterals, how they are formed, easy ways to identify them, and commonly seen quadrilaterals around us.
Khan Academy
Khan Academy: Area and Perimeter on the Coordinate Plane
Find the area or perimeter of shapes like triangles, rectangles, parallelograms, and hexagons on the coordinate plane. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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: 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.
Texas Instruments
Texas Instruments: The Area of the Trapeziod
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...