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Estimation Exploration
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In this "Sid the Science Kid" activity from Episode 103: Enough With the Seashells!, learners practice estimating numbers of objects (like shells) and then check their estimates by counting.

Float Your Boat
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In this physics activity, learners will explore buoyancy.

Mechanical Grabber
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In this engineering activity, challenge learners to make a "grabber" that can pick up trash. Learners use simple materials to create pinchers that can grab small items.

Animal Guess Who
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In this game, learners take turns guessing toy animals from around their house based on the toy's characteristics.

Current Events
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Learners model the ocean currents that carry hot water from the tropics to northern latitudes.

Topographic Investigation: Map an Underwater Surface
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In this activity, learners create a map of a hidden surface using a "sounding stick" -- a technique similar to how underwater maps were once made.

Electroscope
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In this activity, learners make an electroscope out of a foam cup, straw, aluminum pie pan, thread, and foil. Learners use their electroscopes to test for static electricity.

Phenakistascope
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In this optics activity, learners build an animation tool to make mini movies. When you spin a phenakistascope, the pictures move so quickly that your eyes and brain can't separate the images.

If Hot Air Rises, Why is it Cold in the Mountains?
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This demonstration/activity helps learners understand why higher elevations are not always warm simply because "hot air rises." Learners use a tire pump to increase the pressure and temperature inside

Testing Antimicrobials:: Antibacterial Soap? Do They All Work the Same?
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Many common household cleaners are antimicrobials.

Life in the Sidewalk Cracks
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In this activity, learners compare plant and animal life in different habitats including a sidewalk crack and lawn. Learners sort human-made materials and natural materials found in each habitat.

Forward-Reverse Switch
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In this activity, learners build a switch to turn electrical circuits on and off.

I Am/Who Has: A Litter Matching Game
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In this game, learners match descriptions of marine debris (shoes, batteries, paper towels, etc.) to images of these items.

Drawing Board
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The Drawing Board consists of a marking pen that remains stationary and a platform that swings beneath the pen, acting as a pendulum.

Roller Coasters
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In this activity learners will build roller coasters and test them using small balls or marbles.

Our Place in Our Galaxy
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In this fun and simple hands-on astronomy activity, learners construct a model of our place in the Milky Way Galaxy and the distribution of stars, with a quarter and some birdseed.

The Decayed Pumpkin
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In this "Sid the Science Kid" activity from Episode 106: My Mushy Banana, learners explore the effects of decay by comparing and contrasting something (an old pumpkin) that's decayed with the same thi

Wild or Domestic Animal Game
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In this quick activity (page 2 of PDF), learners will play a game using their observation and listening skills, interpreting clues from each other to deduce their secret animal identity.

Puff Mobile
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In this engineering activity, challenge learners to design a car using only 3 straws, 4 Lifesavers™, 1 piece of paper, 2 paper clips, tape, and scissors.

Convection Demonstration
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In this quick activity (located on page 2 of the PDF under GPS: Balloon Fiesta Activity), learners will see the effects of convection and understand what makes hot air balloons rise.