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In this outdoor activity, learners race small boats, made of cork, balsa wood, popsicle sticks etc., to investigate the rate and direction of currents in a stream or creek.

In this activity, learners design a device to solve a problem: how to get a ball out of a drain pipe.

Learners tour their school or home looking for sources of indoor air pollutants (IAPs).

In this math lesson, learners determine and compare the rate of descent of various learner-constructed parachutes. Learners construct parachutes that will have maximum hang times.

In this hands-on science experiment, students combine their understanding of the different states of matter and the characteristics of various chemical reactions.

In this activity, learners identify the DNA base bars guanine, cytosine, thymine and adenine. Learners create a DNA model using colored paper clips to resemble these base pairs.

In this activity, learners create and reveal secret messages written with invisible ink! The invisible ink is actually a baking soda solution, and the magical revealing liquid is fruit juice.

In this activity, leaners explore building techniques by recreating the story of The Three Little Pigs.

After a discussion about what a parachute is and how it works, learners create parachutes using different materials that they think will work best.

Using simple materials, learners will construct the end effector (grasping device) of a robotic arm and use the device to capture and pick up an object.

Even fast computers are limited to how quickly they can solve problems. One way to speed things up is to use several computers at once.

In this activity, teams of learners study magnetic fields at four separate stations: examining magnetic fields generated by everyday items, mapping out a magnetic field using a compass, creating model

Learners participate in a variety of activities modeling different disabilities.

In this activity, learners will explore how a hydrometer works by building a working model and conducting experiments.

In this activity, learners explore force and motion by constructing cardboard cars that are propelled by balloons.

In this activity, learners use a fictitious map of "Tourist Town" and counters to problem solve how to place ice-cream vans on street intersections so that every other intersection is connected to one

In this activity, learners are challenged, using everyday objects, to create simple machines to complete specific tasks.

In this activity (page 10), learners explore how molecules self-assemble according to forces of attraction and repulsion.

In this technology activity, learners explore digital imaging and pixels. Learners "transmit" an image to a partner by creating an image on grid paper.

In this activity, learners will build ramps and test how the laws of physics apply do different objects. Learners will explore physics and cause and effect through this activity.