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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.

$10 - $20 per group Ages 8 - 18 4 to 24 hours
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In this activity, learners play a game that models what happens as stem cells differentiate into different cell types.

$1 - $5 per group Ages 11 - 18 10 to 30 minutes
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In this activity, learners will experiment with water- and air-filled balloons as a way of dampening sound before it reaches their ears.

$5 - $10 per group Ages 11 - adult 10 to 30 minutes
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Ocean acidification is a big issue due to the amount of carbon dioxide humans release. CO2 in the atmosphere is absorbed into the ocean thus changing its acidity.

$1 - $5 per student Ages 11 - 18 10 to 30 minutes
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Working in small teams, learners try to build a satellite that can float for at least five seconds in the marked area of a vertical wind tube.

Over $20 per group Ages 8 - 18 10 to 30 minutes
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In this activity related to plant biotechnology, learners use the tissue culture process to rapidly produce clones (genetic copies) of a particular plant (cauliflower, rose cuttings, African violet le

Over $20 per group Ages 11 - 18 1 to 12 months
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In this activity, learners are challenged to design and build a system of gears and kinematics to create a hand-stamping machine.

Over $20 per group Ages 8 - 18 30 to 45 minutes
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In this activity, learners simulate the process of DNA fingerprinting by using electricity to separate colored dyes.

Over $20 per group Ages 11 - 18 1 to 2 hours
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Learners place their hands on different metals and use an ammeter to monitor the flow of electricity from one metal to another.

$10 - $20 per group Ages 8 - 18 5 to 10 minutes
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The beautiful iridescent colors of a bubble in a can! With this Exploratorium Science Snack, create beautiful soap films on the open end of a can to see beautiful rainbows of color.

1 cent - $1 per student Ages 4 - 18 5 to 10 minutes
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In this online interactive simulation, learners will add different salts to water and then watch the salts dissolve and achieve a dynamic equilibrium with solid precipitate.

free Ages 8 - adult 10 to 30 minutes
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In this activity, learners explore how pens have been engineered and re-engineered over time. Learners work as a team to develop a working pen out of everyday items.

$10 - $20 per group Ages 8 - 18 1 to 2 hours
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In this activity, learners explore how parachutes are used to slow down moving objects. Learners work in teams of "engineers" to design and build their own parachutes out of everyday items.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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In this activity, learners build mini-basketball courts and explore the laws of physics. Learners discover that everything you throw or shoot on earth travels in a parabola.

$10 - $20 per student Ages 6 - 18 30 to 45 minutes
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Learners observe working lava lamps to understand how they work (included in PDF link).

$10 - $20 per group Ages 8 - adult 10 to 30 minutes
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In this activity, learners will test the strength of different brands of paper towels.

$1 - $5 per student Ages 4 - adult 30 to 45 minutes
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In this activity, learners will review the functions of basic digestive organs, understand how diet affects digestion, understand how digestive tracks may differ, and then step outside to compare the

free Ages 8 - 18 30 to 45 minutes
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In this activity, learners will explore globes of frozen water to learn how to ask and then answer 'investigable' questions. The activity web page includes a short video demonstration.

$1 - $5 per group Ages 8 - adult 45 to 60 minutes
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In this activity, you take regular dominoes, and turn them into conductive switches that can turn on a LEGO RCX block or Pico Cricket (micro controller). LEGO RCX block or Pico Cricket is required.

Over $20 per group Ages 8 - adult 2 to 4 hours
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In this laboratory experiment, learners explore how effectively different sunscreens protect yeast cells from damage caused by ultraviolet (UV) radiation.

Over $20 per group Ages 8 - adult 1 to 2 hours