Curated OER
Spelling by Picture-Shapes
Learn how to spell the names of basic shapes. Ten shapes are shown, and the learner must write the correct spelling in the spaces provided to the left. There's even a bit of scaffolding provided for your youngsters, as each letter has...
Curated OER
Using R&R to Teach Mathematics
Second graders create a shape garden. In this polygons lesson, 2nd graders practice making shapes using a geoboard and read the book The Greedy Triangle by Marilyn Burns. Students also design a shape garden using construction paper.
Curated OER
Investigating Tessellations in 2 Dimensions
Students analyze tessellations. In this geometry instructional activity, students discover which shapes can or cannot be used to create a tessellation. Students watch a video, then create their own tessellations.
Curated OER
Bonus Activity: Build a House
Students complete a building activity using their knowledge of geometrical shapes, tools, and how to follow a plan from previous lessons in this unit. In this following directions lesson, students study the basic building process as it...
Curated OER
Triangular-prism Net
In this math learning exercise, students create a model of a triangular prism by cutting the pattern and folding on the lines. There is no picture of the finished product.
Curated OER
Building With Triangles
Students participate in a unit on triangles. Through the unit they explore different way to make basic shapes using triangles. They also examine the basic properties of triangles and the relationships among basic geometrical shapes in...
Curated OER
The Folding Problem
Ninth graders experiment with paper folding to create geometrical shapes. Students analyze the Copymaster of the problem. After the students have worked on their own for a while, stop them and discuss.
Curated OER
Ge-Oh Boy, Oh Boy
Young scholars listen to the book, Sam Johnson and the Blue Ribbon Quilt and discuss the art of quilting. They examine various symmetrical sewing designs, and identify reflection pieces, slides, and flips.
The Math League
The Math League: Figures and Polygons
This site provides definitions of different types of polygons and figures.
George Mason University
Handmade Manipulative Instructions
At this personal site, you will find pages of math manipulatives and different types of graphing paper to print out and use in your classroom.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Rhombus
This is a very brief look at the rhombus, which is a quadrilateral shape with four equal sides. Features include a JavaSketchpad that allows you to manipulate the shape.