Eighth graders investigate the Pythagorean Theorem and practice applying the theorem to various triangles. Finally, in the next lesson in the sequence, 8th graders create a song or a story to help them remember the Pythagorean Theorem.

Eighth graders complete math problems given in this lesson, where they find the perimeter and area of specific figures. They estimate the perimeter and area of shapes and figures and then complete the mathematical formula to find the...

Ninth graders find the height of an object that would be difficult or impossible to measure directly. They construct and use a Clinometer to measure the angle of elevation (or depression). Students create a sketch of the measurement...

Students watch a demonstration on making a quilt. Using that information, they practice making their own lone star quilt. They share their creation with the class to end the lesson and can make more quilts with different types of...

Students work together to make figures out of tangram squares. In groups, they calculate the measurements they need and apply the Pythagorean Theorem. They complete a worksheet solving equations using the theorem and review their answers.

Students measure the circumference of an object to the nearest millimeter. They also measure the diameter. The relationship of the two measurements is taught and how the value of pi came into existence.

In this math worksheet, students find the solutions to the eighteen problems while substituting the numbers for the variables in the expressions.

Students construct using Cabri software. In this geometry lesson, students convert between units and apply the correct measurements to build objects. They create the room virtually and manipulate the shapes to the desired measurements.

Ninth graders calculate the distance between two points.

Students add and subtract fractions and multiply and divide fractions using pattern blocks.

These activities provide an opportunity for students to explore the area formulas for triangles, trapezoids, and parallelograms.

The geometry resource explores the different formulas used to calculate the area of triangles. The applet investigates the angles and sides of a triangle.

Get independent practice working with finding the perimeter and area of triangles and trapezoids. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.

Learn how to find the area of triangles without right angles. Find the formula to use depending on the information you know about the triangle: base and height, three sides, or two sides and an angle.

[Free Registration/Login may be required to access all resource tools.] In this lesson students use formulas and given information to figure out the dimensions and the area of different triangles. Students examine guided notes, review...

Sixth graders apply what they know about area of other polygons to develop a formula for finding the area of a triangle.

Students review the definition and area formula for the rectangle, square, parallelogram, triangle, trapezoid, and circle.

Calculate the Area of a Trapezoid This Concept Handheld Software Application reviews the definition and area formula for the rectangle, square, parallelogram, triangle, trapezoid, and circle.

[Free Registration/Login may be required to access all resource tools.] This lesson covers how to find the area of a triangle using sine.

This lesson presents the idea that the area of any triangle is exactly half of a certain parallelogram -- thus we get the familiar formula of multiplying the base and the altitude and taking half of that. The lesson contains varied...

[Free Registration/Login may be required to access all resource tools.] This study guide reviews the formulas for area and perimeter of triangles and different kinds of quadrilaterals.

The resource consists of area formulas and diagrams for a square, rectangle, circle, triangle, and trapezoid.

[Free Registration/Login may be required to access all resource tools.] Determine an alternate formula for a triangle's area.

Demonstrates the logic behind the formula for the area of a triangle. Includes several practice problems and their explanations.