# Activities

## Geometry Scavenger Hunt

You can find geometric shapes everywhere! Practice observation skills and notice examples of geometric shapes in this scavenger hunt, and then sketch and write about each shape.

## Walking Polygons

In this activity, you’ll walk the sides and interior angles of various polygons drawn on the playground.

## Playground Patterns of Cracks

Paved surfaces sometimes form cracks due to stress from objects embedded in the surface, or due to stress created by expansion or contraction. In this activity, you’ll observe and sketch cracking patterns.

## Tiny Pants Photo Challenge

What would your friend look like in “tiny pants”? Using a simple trick of perspective, you can dress your friends in tiny cutout clothing.

## Walk a Math Trail

Get outside and explore geometry (and other math) all around you. A math trail is a walk with various stops where you look at math in the world around you, and ask questions about it.

## Geometry Activities for Educators

These hands-on activities will help spark students’ interest in geometry. They're designed for classroom use but can also be done by families or other groups. ESPAÑOL indicates activities that are available in Spanish.

K–2
 Put triangles together to make patterns. Pon triángulos juntos para hacer patrones.
K–2 String Shapes Make many-sided shapes with string.
K–2 Exploring Pattern Blocks See how polygons fit together.
K–2 Exploring Tessellations Repeating patterns in two and three dimensions.
K–2 Reflections The symmetry of mirror images.

3–5 Making a Translation Tessellation Slide a shape to create an unusual tiled pattern.
3–5 Cut-Fold-Staple Rotate a flat shape into the third dimension.
3–5 Experimenting with Symmetry See how mirrors reflect the features of a shape.
3–5
 Exploring Pattern Blocks ESPAÑOL Explorando patrones de bloques
 Combine polygons to make larger shapes. Combina polígonos para hacer formas más grandes.
3–5
 Build repeating patterns, both 2D and 3D. Construye patrones que se repiten, tanto en dos dimensiones como en tres dimensiones.
3–5 Rotating String Shapes Make multi-sided shapes with string.

6–8 Building Three-Dimensional (3D) Structures Draw a 3D structure in two dimensions.
6–8 Exploring a Complex Space-Filling Shape Build your own stellated rhombic dodecahedron.
6–8 Exploring Tessellations Design unique tiles and make repeating patterns.
6–8 Scaling Cubes What happens when a cube gets bigger and bigger?
6–8 Soda Can Mirrors Changing pictures in a curved mirror.
6–8 Beyond Dominoes: Polyominoes The more squares you add, the more interesting the shapes get.

## Outdoor Activities for Educators

This set of activities is written for a class, after school, or other group to do on a playground. They can easily be adapted to be done by families, however, and they can be done at other outdoor locations. Physical exercise and the gamelike nature of the activities make learning geometry fun.

ESPAÑOL indicates activities that are available in Spanish.

 Geometry Scavenger Hunt ESPAÑOL Búsqueda del tesoro geométrico What geometric shapes can you find on the playground? ¿Qué formas geométricas puedes encontrar en el parque de juegos? Stride Ruler Use your own two feet to estimate distances. Measuring and Mapping the Playground Use a scale factor to create an accurate map. Handy Measuring Ratio Use your hand as a tool for indirect measurement. Pocket Protractor ESPAÑOL Transportador de bolsillo Measure angles with a tool you can make yourself. Mide ángulos con una herramienta que puedes hacer tú mismo. Playground Patterns of Cracks ESPAÑOL Patrones de grietas en el parque de juegos Are some angles more common than others? ¿Algunos ángulos son más comunes que otros? Angle Hunting What angles can you find in playground equipment? Walking Polygons Investigate the interior angles of polygons with your feet. Traveling Networks What’s the rule that tells you whether or not a network can be “traveled’? Solving Playground Network Problems Use cooperation and logical thinking to find solutions.

Geometry Playground is made possible by the National Science Foundation and the Gordon and Betty Moore Foundation.

Any opinions, findings, conclusions, or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

Credits

© 2010 Exploratorium | The museum of science, art and human perception