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Choose a recipe to double (or triple, quadruple, or halve). Show everyone the recipe and engage them in figuring out: How much will we need to increase the recipe to feed everyone?

1 cent - $1 per group Ages 4 - 14 30 to 45 minutes
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Get all wrapped up in a lesson about skin!

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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Learners take a field trip along a local body of water and conduct a visual survey to discover information about local land use and water quality.

$10 - $20 per group Ages 11 - 18 1 to 2 hours
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In this activity, learners create a model using metric measuring tapes and atmosphere composition data.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners build a recording timer made from simple materials (e.g., small dc motor, sharpie pen, craft sticks, adding machine paper tape, etc.).

Over $20 per group Ages 14 - 18 1 to 2 hours
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In this activity, PVC pipe, plastic water bottles and vinyl tubing are used to make a simple working toilet model. The model shows the role of a siphon in the flushing of a toilet.

$10 - $20 per group Ages 8 - 18
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Esta actividad enseña la proporción y razón por hacer que los aprendices hagan "ensaladas" que combinan tres tipos de frijoles en tres combinaciones diferentes.

1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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This lesson challenges groups of learners to design and construct a wind generator with the most electrical output.

$10 - $20 per group Ages 11 - 14 2 to 4 hours
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In this activity, learners build small indoor paper rockets, determine their flight stability, and launch them by blowing air through a drinking straw.

$5 - $10 per group Ages 8 - 14 45 to 60 minutes
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In this math lesson, learners explore transformations and quadratic functions through toothpick patterns.

$1 - $5 per group Ages 14 - 18 45 to 60 minutes
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In this activity, learners are introduced to tree rings by examining a cross section of a tree, also known as a “tree cookie.” They discover how tree age can be determined by studying the rings and ho

1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners explore density and buoyancy as they design and construct rafts.

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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This activity (on page 2 of the PDF under SciGirls Activity: Forecasting) is a full inquiry investigation into meteorology and forecasting.

$1 - $5 per student Ages 8 - 14 1 to 4 weeks
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Learners investigate stress and strain by designing, building, and testing beams made from polymer clay.

$1 - $5 per student Ages 11 - 18 30 to 45 minutes
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This activity demonstrates the importance of wearing a helmet to protect the brain. An egg is used to symbolize a head with the shell as the skull and the inside of the egg as the brain.

1 cent - $1 per group Ages 4 - 14 10 to 30 minutes
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In this activity, learners investigate passive solar building design with a focus solely on heating.

$5 - $10 per group Ages 14 - 18 4 to 24 hours
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This hands-on experiment will provide learners with an understanding of the issues that surround environmental cleanup.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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This activity (on page 2 of the PDF under GEMS Activity) is a full inquiry investigation into technology design and testing.

Over $20 per group Ages 8 - 14 2 to 4 hours
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Learners build at least two different spinners (tops) to investigate how mass distribution, size, and shape affect the length of time the spinner spins.

1 cent - $1 per student Ages 11 - 18 30 to 45 minutes
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In this engineering activity, learners will get acquainted with the basics of wind energy and power production by fabricating and testing various blade designs for table-top windmills constructed from

Over $20 per group Ages 11 - 14 2 to 4 hours