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Learners add acid rain (nitric acid) to two cups that represent lakes. One cup contains limestone gravel and the other contains granite gravel.

1 cent - $1 per group Ages 14 - adult 5 to 10 minutes
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In this optics activity, learners explore diffraction by adding wax blocks to a ripple tank. The wedge-shaped blocks act as obstacles that the wave must bend around.

$1 - $5 per student Ages 14 - adult 5 to 10 minutes
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In this activity, learners look at and touch marine animal skulls to compare them and think about what they eat.

$10 - $20 per group Ages 4 - adult 10 to 30 minutes
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In this outdoor, beach activity, learners use tennis balls, water balloons and other simple devices to investigate the movement of waves and currents off a sandy beach.

Over $20 per group Ages 8 - adult 1 to 2 hours
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In this game, learners match descriptions of marine debris (shoes, batteries, paper towels, etc.) to images of these items.

1 cent - $1 per group Ages 8 - adult 10 to 30 minutes
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In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

free Ages 4 - adult 10 to 30 minutes
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Learners compare the properties and solubilities of Styrofoam (TM), ecofoam packing peanuts, and popcorn. First, the solubility of each substance is tested in water.

1 cent - $1 per group Ages 11 - adult Under 5 minutes
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This is a guide for facilitating interaction at a touch tank with marine animals. The instructions are for setting up a display in an informal science center, but could work anywhere.

$1 - $5 per group Ages 4 - adult 10 to 30 minutes
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Look at pictures through different color filters and you'll see them in a new way. People have used color filters in beautiful photography or sending secret messages.

1 cent - $1 per student Ages 4 - adult 5 to 10 minutes
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This lesson is designed to serve as an introduction to the immune system. It can stand alone or it can lead into further studies of the immune system.

Over $20 per group Ages 14 - adult 2 to 4 hours
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This game uses a modified Uno deck to review concepts related to stem cell research and diabetes.

$1 - $5 per group Ages 14 - adult 30 to 45 minutes
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This fun and simple hands-on astronomy activity illustrates the value of supernovae in the universe.

1 cent - $1 per group Ages 8 - adult 10 to 30 minutes
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In this activity, leaners will observe the process of natural selection on a population of birds called 'Springbeaks' over four seasons of breeding on an isolated environment called 'Clippy Island.' L

$10 - $20 per group Ages 11 - adult 45 to 60 minutes
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Break open that used musical toy and squish some Play-Doh over the circuit boards, and you will hear some weird and distorted sounds the manufacturer never intended!

$1 - $5 per student Ages 4 - adult 45 to 60 minutes
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Exponga estos pósteres en el salón o déjelos donde los chicos los puedan explorar. Los chicos buscan las respuestas en libros de consulta o en línea.

free Ages 6 - adult Under 5 minutes
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Many common household cleaners are antimicrobials.

$1 - $5 per group Ages 8 - adult 10 to 30 minutes
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In this activity, learners compare their own strength to ants through a series of physical tests.

free Ages 4 - adult 10 to 30 minutes
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In this activity, learners will observe birds in their backyard or local park. They will attempt to find common Ohio birds and will look for bird behaviors just like an ornithologist.

free Ages 4 - adult 30 to 45 minutes
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In this guided discussion activity, learners watch a video about Central Africa's Lower Congo River, one of the most biologically diverse rivers in the world.

free Ages 11 - adult 10 to 30 minutes
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In this card-based personal choice activity, learners review and sort COVID-19 and vaccine science information.

$1 - $5 per group Ages 11 - adult 10 to 30 minutes