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In this activity, learners make "totally tubular" forms of carbon. Learners use chicken wire to build macro models of carbon nanotubes.

In this activity, learners create a simple “top” from a CD, marble and bottle cap, and use it as a spinning platform for a variety of illusion-generating patterns.

In this activity, learners use squares to figure out how many border tiles are needed to enclose different areas.

In this sorting activity, learners play a game in which they try to identify the largest number of differences between two objects.

Esta actividad enseña la proporción y razón por hacer que los aprendices hagan "ensaladas" que combinan tres tipos de frijoles en tres combinaciones diferentes.

In this calculus activity, learners use a classic problem of geometrical probability to find an important mathematical constant (pi).

In this online interactive, learners use fossils to infer temperatures 55 million years ago, at the sites where the fossils were found.

In this activity, learners burn a peanut, which produces a flame that can be used to boil away water and count the calories contained in the peanut.

In this activity about light and perception, learners create and observe moire patterns.

In this math activity, learners observe and sketch cracking patterns in pavement.

In this activity, learners work in partners to create and exchange messages written in Braille. Learners use a Braille key and thumbtacks to write their messages in Braille.

In this activity on page 3 of the PDF, learners investigate how much sugar is in a soda. Learners use sugar cubes to measure and calculate the amount of sugar in a bottle of soda.

In this math game, learners toss plastic cups to land just right and collect points to win.

In this activity, learners will measure the length of a shadow and use the distance from the equator to calculate the circumference of the earth.

In this activity, which requires adult supervision, learners get to explore the awesome power of chemistry.

In this activity, learners make their own pinhole viewer in order to measure the size of the sun.

In this math activity, learners use a "function machine" to collect and organize simple data. The function machine in this case is a cardboard box and the input/output data are paper fish.

In this math activity related to light, learners assemble a photometer and use it to estimate the power output of the Sun.

In this activity, learners use multiplication skills to get groups of aliens safely back to their planet.

In this geometry activity, learners explore networks painted on playgrounds, such as a four square court, and draw their own.