The purpose of this lesson is to help students apply math concepts concerning similar triangles and trigonometric functions to real life situations. The students learn how to take these concepts and use them to find measurements of...

This activity is used to discover that the sum of the measures of the triangle angles is constant and to discover ways of proving the theorem listed in the activity.

A concise tool for assessing a variety of math concepts including measurement, algebra, number sense, and data. Assessment is scored online immediately. An excellent tool for quick assessment.

Use this activity to teach students to represent numbers in scientific notation, and use geometry to solve problems related to three-dimensional figures. Explore distance and capacity problems about planets in the solar system. The...

Identify the type of angle without measurement.

Test your knowledge of the missing angle measure.

Test your knowledge of the measurement of angles in a triangle.

Determine the missing angle measures of quadrilaterals inscribed in circles.

Use the alternate segment rule for cirlces to determine the angle measures.

Use trigonometry to determie the angle measures.

Test your knowledge of using the law of sines to determine angle measures.

Determine angle measures based upon the given information.

Explore opposite angles by chosing the appropriate angle for the missing degree of measure.

A "convention" is "just the way a thing is done!". This reference material lists some common conventions (notational assumptions) for geometry and trigonometry.

Can there be a connection between map making and math? Explore the mathematics of cartography in this resource that integrates web-based instruction, mathematical problem solving, geometry, history, and art. Interesting information and...

This lesson allows middle schoolers to discover the number Pi. By measuring real life objects, students will get to see where the number Pi comes from as well as how the circumference formula is derived.This lesson plan was created as a...

Differences between shapes are determined through measurement skills.

[Free Registration/Login may be required to access all resource tools.] Find unknown side lengths in similar figures.

In this activity, students use the drawing and measurement tools of Cabri Jr. to blend coordinate geometry with drawing tools. They visualize symmetry and reflect a point across the y-axis.

[Free Registration/Login may be required to access all resource tools.] Classify different types of triangles by their angles.

[Free Registration/Login may be required to access all resource tools.] Classify different types of triangles by their side lengths.

[Free Registration/Login Required] Students use similar triangles to determine the height of the base of a tree house. Click learn more to watch a video and click challenge me to answer a practice question.

This video geometry lesson [6:14] explains the concept of perimeter and has varied exercises for students to practice.

Third graders will use the bat houses we built as examples of various quadrilaterals.