[Free Registration/Login may be required to access all resource tools.] The video defines a triangle by the number of sides and then determines which of the figures in the diagram are triangles. The video is followed by additional...

During the Olympic and Paralympic Games many national flags will be on display. This activity explores 2D shapes, angles and symmetries in the context of flag designs, and is designed to be accessible to primary pupils at Key Stage 2.

Explore surface areas and nets with 2D and 3D shapes.

This is a Peg + Cat collection of 16 online math games. These include counting, numbers, 2D and 3D shapes, patterns, location, maps, and more.

Provides a list of area and perimeter formulas for two-dimensional shapes and volume and surface area formulas for three-dimensional solids.

[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...

Students will play interactive games and explore symmetry.

Join Otto at the Phantasia construction site. Will you help him build a new playground?

Eighth graders are presented with a drawing of a large square inscribed by a circle which is itself inscribed by a second square. They are asked to find the area of the circle outside the smaller square and compare it to the area of the...

This site provides an in-depth definition of a two-dimensional figure and a three-dimensional figure. Related terms include arcs, vertices, polygon, and many more.

In this lesson plan, 7th graders use their knowledge of formulas to determine the area and circumference of a circle.

Students practice interpreting scale models, receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

[Free Registration/Login may be required to access all resource tools.] Apply inscribed angle theorems.

[Free Registration/Login may be required to access all resource tools.] This concept teaches students to solve for missing segments created by a tangent line and a secant line intersecting outside a circle.

[Free Registration/Login may be required to access all resource tools.] Extend numerical patterns by identifying and following rules

How would you find the area of a polygon or circle? Explore this concept with engaging activities at this test prep site. Here you will find detailed problem solving strategies with accompanying visuals, a reference table with formulas,...

[Free Registration/Login may be required to access all resource tools.] Apply the Two Secants Segments Theorem.

Brush up on your math skills relating to the area of rhombuses then try some practice problems to test your understanding.

Brush up on your math skills relating to the area of triangles then try some practice problems to test your understanding.

This interactive diagram focuses on sorting polygons by common properties and then you select the correct label for each section of the Venn Diagram.

Brush up on your math skills relating to rectangles then try some practice problems to test your understanding.

Brush up on your math skills relating to squares then try some practice problems to test your understanding.

A guide to support parents as they work with their students in angle measure and plane figures.

Play a game to build a hexagon.