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 Lesson Plans (3) Interactives/Games (1) Learning Activities (1)

## ALEX Lesson Plans

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Subject: Mathematics (8), or Science (8)
Title: Mirror, Mirror on the Wall: Reflections of Light
Description: Students will learn about the reflective behaviors of light, and the wave and particle nature of light. Students will also recognize congruency of angles.

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Subject: Mathematics (7 - 8)
Title: Build a City on Geometry
Description: The students will be split into small, cooperative groups and build a city following specific guidelines. The students will learn how a city is constructed with angles, intersections, parallel, intersecting, and transversal streets. They will understand that buildings are located at particular points which are considered alternate interior or exterior angles, corresponding angles, etc. This lesson plan was created as a result of the Girls Engaged in Math and Science, GEMS Project funded by the Malone Family Foundation.

## Web Resources

### Lesson Plans

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http://illuminations...
In this lesson, students draw various polygons and investigate their interior angles. The investigation is done using both an interactive tool and paper and pencil to foster an understanding of how different patterns can lead to the same solution. After comparing results with a partner, students develop a formula showing the relationship between the number of sides of a polygon and the sum of the interior angles.

### Interactives/Games

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Math Makes a Connection: Exploring Angle Sums
http://connectedmath...
In this interactive game, students will explore the sum of the measures of the interior angles of triangles, quadrilaterals, and other polygons using rotations of 180 degrees about a midpoint of a side. This game is part of the Connected Math site.

## Thinkfinity Learning Activities

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Subject: Mathematics
Title: Angle Sums
Description: In this student interactive, from Illuminations, students explore the sum of the interior angles of triangles, quadrilaterals and other polygons. They can select which type of shape to explore; and, for triangles and quadrilaterals, they can watch a visual demonstration
Thinkfinity Partner: Illuminations