Students construct equilateral triangles and a 'laser' triangle.  In this reflection lesson students build a retro-reflector using mirrors.

Students view a video to gather information about our solar system. They create models of the planets to scale and place them in scale relative to their distances from the sun. They also visit a planetarium or use the internet to gather...

Students explore with quadrilaterals.  In this roping quadrilaterals lesson plan, students work in cooperative groups to play the game, "Question, please!" in order to identify, describe, compare and classify quadrilaterals....

Students explain how sunlight is converted to electricity. For this series of physics lesson, students study how varying the characteristics of the light source affect photovoltaic cells. They research their different uses in other...

Students determine the height of objects using shadows. In this math lesson, students discus methods of finding the height of items without directly measuring. Students measure shadows and figure the actual height of the object.

For this vectors worksheet, students draw scale diagrams and solve the problems using trigonometric methods. Students determine angles, speed, and components of force. This worksheet has 7 problems to solve.

Learners view images in a spherical mirror and interpret the path of light. In this physics lesson, students view a large spherical mirror demonstrated by the instructor. They use shiny serving spoons to investigate the path of...

Young scholars explore the concept of transformations. In this transformations lesson, students use Geometer's Sketchpad to construct cyclic and dihedral figures. Young scholars study reflection and rotation symmetry. Students discuss...

Viewers discover how to solve quadratic-linear systems with a video that first explains the substitution method for solving a system of equations involving a quadratic. Scholars then complete a instructional activity of practice problems.

Young mathematicians learn how to simplify expressions with square roots by watching a video that shows several ways to rewrite expressions involving radicals. They work on questions where they rationalize denominators and expand and...

Students discover how to use various tools to measure and draw angles. With protractors, they classify angles according to angle measure, identify vertical angles, and perform angle additions. For their final project, students create...

In this angles activity, students use a protractor to measure and classify a set of 9 angles. A reference web site is given for additional activities.

In this angles activity, students classify and measure a set of 9 angles, using a protractor. A reference web site is given for additional activities.

In this angles worksheet, students use a protractor and measure a set of angles, correctly checking features and measurements that apply. A reference web site is given for additional activities.

Students measure and label specified angles. In this angles lesson, students use a protractor to find angles that are acute, obtuse, and reflexive. Students then label each angle and match the angles the correct definition. This lesson...

Students measure the height of items using an astrolabe.  In this latitude lesson students construct a sextant and determine height and latitude with it. 

Students measure the angles of wings and tails of various aircraft using a protractor. They estimate and check their measurements. They investigate aircraft being developed and tested at NASA Dryden.

Students explore how electronic screens use only three colors to produce the colors that people see on the screen. They make and test a color wheel.

Fourth graders measure wind speed over a week's time uisng a ping pong and a protractor and graph the results. They convert the number of degrees to miles per hour using a scale. They discuss patterns and relationships.

Fifth graders describe and demonstrate how trigonometry can be used to find the height of a tall building or tree. They describe and demonstrate how trigonometry can be used to find the height of a high hill, or other high object where...

Students use geometry or trigonometry to measure the distance of a far off point. They verify their measurements using a tape measure to check their work.

Young scholars use wax paper to look at different properties of circles such as chords, tangent lines, inscribed angles, and inscribed angles in a semi-circle, as well as finding the center of the circle, and use GSP to investigate...

Students examine the correlation between art and math. Using their computers, students construct and measure angles. Students identify the properties of angles and polygons. They engage in the Angles program on their Palm and use the...

Learners bisect angles and segments using a mira. They measure the original angles and segments and the angles and segments formed by bisecting to better see the relationship between them.