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In this activity about light and perception, learners create pictures in thin air.

In this activity, learners add squares to paper dominoes to make polyominoes.

In this optics activity, learners examine how a transparent material such as glass or water can actually reflect light better than any mirror.

Challenge popular misconceptions, learners explore how a mirror actually reflects an image in this activity.

In this activity, learners play a game and use pattern blocks to explore mirror images and reflection.

In this optics activity, learners discover how they can make glass objects "disappear." Learners submerge glass objects like stirring rods into a beaker of Wesson™ oil to explore how the principles of

In this activity, learners use pattern blocks and mirrors to explore symmetry. Learners work in pairs and build mirror images of each other's designs.

In this activity, learners discover how to rotate a flat shape into the third dimension. Learners draw and cut out a shape that has at least one straight edge on an index card.

In this activity, learners design unique tiles and make repeating patterns to create tessellations. This activity combines the creativity of an art project with the challenge of solving a puzzle.

In this activity, learners arrange triangles together to make patterns to create paper quilts. Learners experiment with arranging the triangles in different ways to make various designs.

In this activity, learners practice drawing 3D structures in two dimensions. Learners draw cube stacks from five different points of view.