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Make a big canvas of iridescent color with pvc pipe! In this Exploratorium Science Snack, you'll need to cut and assemble some PVC pipe, but the pay-off, the soap-bubble canvas, is big.

This activity was designed for blind learners, but all types of learners can explore the process used to cast and mold molten metal, glass, and plastics.

In this activity, learners construct bug models that "jitter" all over the table with just a battery, motor, and counterweight.

In this math activity, learners sort patterns into similar "families" or groups that have the same pattern, but different symbols.

In this activity (on pages 55-66 of PDF), learners fold paper into origami shapes and then combine several identical shapes into a three-dimensional structure.

In this activity, learners explore the concept of density by pouring 5 different liquids into a jar. Food coloring is added if needed to give each liquid a distinct color.

Learners make a mobile model of a carbon atom using clay, wire, and pipe cleaners.

In this activity, pairs of learners model how scientists use craters to determine the ages of lunar surfaces. One partner keeps time while the other creates a painting for the other to interpret.

In this activity on page 4 of the PDF (Behind the Scenes with Chemistry), learners make some special effects, including snow and breaking glass, with supplies found in the home.

In this activity, learners explore the human influences on the carbon cycle and examine how fossil fuels release carbon.

In this biology activity (page 5 of the PDF), learners use yarn and sticky labels to build a model of a DNA strand. They discover that DNA is very long, very skinny, and packs well into cells.

Discover geometry by creating shapes from loops of paper. In this activity, paper loops transform to give you totally new structures when you cut them.

In this activity, learners will explore how the voice works and feel the vibrations produced by vocal cords.

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

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

In this fun snack and craft activity, young learners make "Ants on a Log" and their own model of an insect. The purpose is to learn the three main insect body parts—head, thorax and abdomen.

This activity shows you how to make amazing crystal spikes using Epsom salt and the sun.

In this activity, learners build a bird feeder or feeders to attract birds for observation.

In this activity, learners map their world by drawing a plan of their bedroom.

In this STEAM activity, learners create a "pixel tube" to explore reflections of light and color mixing.