The purpose of this task is to help students differentiate between a polygon and the region inside of a polygon so that they understand what is being measured when the perimeter and area are being found. Aligns with 3.MD.D.

Eighth graders are shown three polygons with equal sides and a circle. They are asked to find the area of each when the perimeter is one unit and to order them from smallest area to largest. Aligns with 8.G.B.7.

This task presents drawings of polygons on square grids and asks students to calculate their area. They will need to use a few strategies, including decomposing and recombining shapes. Aligns with 6.G.A.1.

Suppose ABCD is a quadrilateral for which there is exactly one rotation, through an angle larger than 0 degrees and less than 360 degrees, which maps it to itself. Further, no reflections map ABCD to itself. What shape is ABCD? Aligns...

There is exactly one reflection and no rotation that sends the convex quadrilateral ABCD onto itself. What shape(s) could quadrilateral ABCD be? Explain. Aligns with G-CO.A.3.

This task asks which pictures represent half of a circle? Moving into more complex shapes where geometric arguments about cutting or work using simple equivalences of fractions is required to analyze the picture. Aligns with 3.G.A.2.

Beehives are made of walls, each of the same size, enclosing small hexagonal cells where honey and pollen are stored and bees are raised. This problem examines some of the mathematical advantages of the hexagonal tiling in a beehive....

This task gives young scholars a chance to explore the effects of the Earth's tilt and rotation using a simple geometric model of Earth-Sun interaction that shows why the seasons occur. Aligns with G-MG.A.1.

This task examines the rigid motions which map a rectangle onto itself. The emphasis here is on careful reasoning using the definitions of reflections and rotations. Aligns with G-CO.A.3.

Using this Logo Program you can experiment with different values for N in the procedure and see the changes in the results.

Practice identifying circles, triangles, squares, rectangles, rhombuses, trapezoids, and hexagons. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Discover 2D shapes and 3D objects from different views in Antarctica!

Kindergarteners love to identify shapes in their environment. In order effectively do that, they must be able to recognize different shapes by their specific attributes. In this lesson kindergartners learn about the attributes of a cube.

Archeologists, when classifying artifacts, often take note of the physical properties or attributes of artifacts, such as the materials from which the artifacts are made, and their size, shape, function, and decoration. Friezes are often...

This website gives students an opportunity to sort and classify attributes of a group. The applet responds to each selection made and guides student to the next step.

This task asks students to compare the volumes of three vases that are different shapes - a cylinder, a cone, and a sphere - as well as one with a combination of shapes. They are then asked to create a vase with composite shapes, find...

[Free Registration/Login may be required to access all resource tools.] The video briefly shows and describes a triangle, circle, rectangle, and square and uses process of elimination to determine the given shape. The video is followed...

In addition to providing a task that relates to other disciplines (history, civics, current events, etc.), this task is intended to demonstrate that a graph can summarize a distribution as well as provide useful information about...

Do you need practice remembering or learning different geometry vocabulary words and definitions? This word search 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...

Do you need practice remembering or learning different geometry vocabulary words and definitions? This concentration 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...

The learning activity asks students to identify quadrilaterals by characteristics rather than appearance. Learners drag the vertices of the shape to reveal the true shape of the quadrilateral. [Requires Java.]

Students will explore shapes and their attributes through a variety of resources including web sites, story books and manipulatives. Students will create a presentation of a shape adventure.

Students work in pairs and take turns drawing two cards. These cards have pictures of different shapes. The students are asked to describe what is similar or different between the two shapes. This type of task lays the foundation for the...

The purpose of this task is for students to compose two-dimensional shapes to create a composite shape using tangram pieces. The teacher will read "Grandfather Tang's Story" and the students will use tangrams to compose the animals from...