Clean Up this Mess! The classroom shapes are in one big heap. Students will work in teams to come up with a way to sort the shapes by attributes and create a visual representation to model their thinking. Pictures and videos of the...

[Free Registration/Login may be required to access all resource tools.] In this lesson, students learn how to translate a figure. They examine guided notes, review examples, watch instructional videos, and try practice problems.

Understand theorems and proofs as they relate to geometry.

Learn about congruence in geometry.

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....

This site gives a lesson on school bus (Taxicab) geometry. The lesson includes distances and midpoints in taxicab geometry.

This lesson focuses on symmetry groups; some shapes have more than one symmetry. You can add two symmetries to form a new one. It provides examples and practice exercises including a "symmetry calculator."

This lesson is an introduction to transformation and symmetry by showing examples in nature and in buildings.

[Free Registration/Login may be required to access all resource tools.] Recognize reflections as flips and also identify lines of reflection. Includes lots of examples, as well as review exercises. Other sections of the tutorial offer...

SWBAT explore the characteristics of cubes, pattern blocks, and geometry blocks. SWBAT count a set of objects up to 20 by 1's. SWBAT play the game "Greater Than" with a partner, using the correct vocabulary.

This site is a lesson plan for using a geoboard in a sixth grade geometry class. The lesson serves as an introduction to the geoboard and its uses in geometry. Some topics the lesson covers include helping to visualize shapes and and...

Learn how probability is used to analyze fairness and decisions.

Take a look at three techniques for counting outcomes.

Understand points that partition line segments.

Learn how to calculate the conditional probabilities of events based on information in a table.

Explore the measurement of cylinders.

Explore applications of triangle theorems.

Learn about inscribed angles formed by two chords in a circle which have a common endpoint.

Learn how similarity transformation is one or more rigid transformations (reflection, rotation, translation) followed by a dilation.

Learn how to sine to find the area of a triangle.

Learn about a line that intersects a circle in two points is called a secant line.

Understand that quadrilaterals that can be inscribed in circles are known as cyclic quadrilaterals.

Find out about some common centers of triangles.

Discover some theorems about triangles.