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    Computer Science Unplugged
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    In this puzzle, learners investigate the decisions involved in linking a network between houses in a muddy city. It can lead on to a discussion of minimal spanning tree algorithms for optimizing...

    Ages 8 - 18
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    Computer Science Unplugged
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    This activity explores the main algorithms that are used as the basis for searching on computers, using different variations on the game of battleships. This activity demonstrates three search...

    Ages 8 - adult
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    American Chemical Society
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    In this activity on page 10 of the PDF, learners develop an experiment to answer the following question: "How much water can the hydrogel in a baby diaper hold?" Use this activity to...

    Ages 8 - 18
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    PhET
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    In this online activity, learners make a whole rainbow by mixing red, green, and blue light. They can change the wavelength of a monochromatic beam or they can filter white light. They can also...

    Ages 6 - adult
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    American Chemical Society
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    In this activity on page 13 of the PDF, use a special plastic card that has been painted with a chemical that changes color when it is in UV light. Examine how the more UV rays there are, the...

    Ages 6 - 14
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    PhET
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    In this online activity, learners use a realistic mass and spring laboratory. They hang masses from springs and adjust the spring stiffness and damping. Learners can even slow time and transport...

    Ages 8 - adult
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    Computer Science Unplugged
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    This activity introduces the idea that computer scientists measure information by how "surprising" a message is. Learners play the game "20 Questions" and use the number of...

    Ages 8 - 14
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    Computer Science Unplugged
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    In this activity about computer programming, learners follow instructions in a variety of ways in order to successfully draw figures. Through these exercises, learners will experience some of the...

    Ages 6 - 18
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    PhET
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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. Learners will also...

    Ages 8 - adult
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    American Chemical Society
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    In this activity on page 15 of the PDF, discover how materials and physical forces behave differently at the nanoscale. Learners experiment with water to see how the effects of surface tension...

    Ages 6 - 14

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