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In this activity, learners create three-dimensional shapes by making some origami models of simple boxes and containers.

This is a quick activity (on page 2 of the PDF under Butterfly Wings Activity) that illustrates how nanoscale structures, so small they're practically invisible, can produce visible/colorful effects.

In this great hands-on activity, learners use patterns to make a teepee from newspaper that they sit inside.

In this activity, "write" a secret message in genetic code as beads on a string.

In this hands-on activity, learners make New Year's Eve party hats out of wrapping paper. Learners use symmetry and measurement to cut out shapes they need to assemble the hats.

In this activity, learners build inexpensive kaleidoscopes using transparency paper and foil (instead of mirrors).

In this activity about problem-solving, learners build a house for the Three Little Pigs using twenty straws and two index cards.

In this math activity, learners trace their hands and estimate the number of beans that can fit into their hand tracings. Then, learners glue the beans to the tracing to test out their estimations.

In this activity, learners explore how pictures change in curved mirrors. Learners make cylindrical mirrors by wrapping Mylar around soda cans.

In this activity, learners use clear nail polish to create a beautiful iridescent pattern on black paper. Learners discover that a thin film creates iridescent, rainbow colors.

In this activity, learners explore light and shadows by creating a lantern they can keep on their nightstand.

In this activity, learners create their own icons for a forecast-at-a-glance poster for their classroom/learning space.

Learners build a model of the planets in the solar system. In their model, the planets are spaced in their relative distance from the Sun.

In this activity, learners build unique yo-yos, which spin round and round without moving up and down.