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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.

Are there boxes, is this an illusion, or is this real life Q-bert? Illusions are always fun to build especially when you can build them.

Experience a spinning spiral...you won't be hypnotized, but you'll see what happens when you look away. It's like getting off a merry-go-round and everything keeps moving.

Up close, an array of dots could look random, but take a step back, and an image forms. By tracing over an image, learners can create their own dot based image.

If you had a long tube with a 5 millimeter wide slit, would you see the entire Golden Gate Bridge?

We listen to stereo music systems, tv's, and radios because it simulates being where the sound originates.

Known as the waterfall effect, this activity demonstrates adaptation in our visual system.

Create an instrument that you don't play--you just listen to it through tubes of various lengths.

We don't normally view people upside down and so our brains aren't accustomed to it.

Make a camouflage cut-out animal! Using patterned paper or magazine pictures from around the house, use your craft skills to make a paper animal that blends into its background.