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In this activity on page 11 of the PDF, learners use candle wax to make "invisible" designs that are revealed with watercolor paints.

Make a rattle-like musical instrument! Shake it, hit it, spin it any way you want to!

In this activity, learners make a photographic image—without a camera!

Coins are everyday objects which tell a lot about the people who use them.

In this activity, learners explore sound by constructing an instrument using some metal pipes, rubber bands, and a baseboard.

Design and create an optical illusion toy that makes two pictures appear to become one. This is called a thaumatrope and will allow the learner to investigate the phenomenon of persistence of vision.

Learn about dyes and mordants (fixatives) when you tie-dye fabric with Kool-Aid™ and vinegar. The colored molecules in Kool-Aid™ form a chemical bond between the fiber and dye molecules.

In this activity, learners construct three quick and simple mechanisms to start building a pop-up book. Learners fold, cut, and glue paper to make a bird beak, parallelogram, and V-fold.

In this activity, learners make an optical illusion toy from the 1800s to explore persistence of vision.

In this activity, learners get hands-on with geometry by making a polyhedron kitty sculpture.

In this activity, learners explore the question "What is paper?" Learners discover the processes and materials required to make paper while experimenting with different recycled fibers and tools.

String Thing is an interactive online game in which learners change a virtual string's tension, length, and gauge to create different musical pitches.

In this activity, learners slide shapes to create unusual tiled patterns.

In this artistic activity, learners blow up a smaller picture into a larger one, by using a grid.

In this craft activity, learners will recognize, name, and compare the fractions 1/2, 1/4, and 1/8 by constructing a penguin out of portions of paper circles.

In this activity, learners create their own constellations and star patterns and write a short, descriptive story explaining the significance of their star pattern/constellation.

In this activity, learners create a traditional Mexican noisemaker (a matraca) using cardboard, craft sticks, and a wooden dowel.

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

In this hands-on engineering project, kids use two simple machines, levers and inclined planes, to construct their own pinball machines.

In this activity on page 2 of the PDF, learners discover how color changes can help scientists distinguish between acids and bases.