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Drawing Conclusions
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In this weather forecasting activity, learners determine the location of cold and warm fronts on weather plot maps.

Making Map Projections
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In this activity about cartography, learners work in teams to create two different map projections: a planar (or polar) and a cylindrical (or Mercator) projection.

Mammal Flipbooks
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In this activity, learners explore mammal locomotion by constructing flipbooks.
Signs of Change: Studying Tree Rings
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In this very hands-on lesson, learners will investigate dendrochronology (the study of tree rings to answer ecological questions about the recent past) and come up with conclusions as to what possible

Big Bubbles
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How do you measure a bubble when it's floating? You can't really, but in this activity, learners can measure the diameter of the ring of suds a bubble leaves on a flat surface.

Games of Chance and Brains
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In this activity, learners build and play three math games. In the first game, called "Switcheroo," learners place marbles in holes 1 through 4 and 7 through 10.

Make an Animation
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In this activity, learners make a device called a phenakistoscope, which displays a continuously looping animation consisting of images drawn onto a spinning disc.

Medical Mystery
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This activity (on pages 15-23) combines interactive role-playing and graphing to introduce learners to the health affects of pollen.
Multiple Reflections
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In this activity, learners explore how mirrors reflect light and change the way we see things.

Estimation
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In this online activity, learners will explore size estimation in one, two and three dimensions. Multiple levels of difficulty allow for progressive skill improvement.

Sliding and Stuttering
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Learners use a spring scale to drag an object such as a ceramic coffee cup along a table top or the floor.

Enciérrelo
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Jugando a este juego de estrategia, los chicos desarrollan su entendimiento de área y perímetro. En su turno, cada jugador hace una línea entre dos punto contiguos en la cuadrícula.

Exploring Products: Nano Fabrics
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In this activity, learners explore how the application of nano-sized "whiskers" can protect clothing from stains.

CD Spectrometer
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In this activity, learners use a compact disc to make a spectrometer, an instrument used to measure properties of light.

Decode the Barcode
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In this online activity, learners crack the special code imprinted on envelopes to help the U.S. Postal Service deliver the mail.

Exploring Size: Memory Game
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In this activity, learners play a card game that explores different size scales--macro, micro and nano.

Inflate-a-mole
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In this activity, learners conduct an experiment to find the volume of one mole of gas. Learners capture sublimated gas from dry ice in a ziploc bag and use water displacement to measure its volume.

Powder Particulars
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In this introductory activity and demonstration, learners are introduced to the concept that different substances react chemically in characteristic ways.

Playground Patterns of Cracks
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In this math activity, learners observe and sketch cracking patterns in pavement.

Polarized Sunglasses
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In this activity, learners explore how polarizing sunglasses can help diminish road glare.