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In this design challenge, learners use their creativity and imagination to design and test a wildlife crossing for their favorite animal.

In this game, learners create flash cards with an image on one side (of an animal, for example) and the sound that animal makes on the other.

Visitors add drops of copper sulfate solution onto a steel nail. They observe the nail change color from silver to brown as the copper plates onto the nail.

In this activity learners will create paint out of natural materials. Explore your natural world (or your fridge) and find berries, leaves, or flowers to find a great base for your paint.

Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water.

In this activity, learners create a traditional Mexican noisemaker (a matraca) using cardboard, craft sticks, and a wooden dowel.

Visitors prepare six solutions combining vinegar and ammonia that range incrementally from acid (all vinegar) to base (all ammonia).

In this engineering design challenge, learners animate a facial expression and make a machine (zoetrope) that plays the animation back.

This activity (on page 2) explores how sensing is part of robotics. Learners try tying their shoes with different constraints.

In this activity, learners capture and observe planaria, which are worms that eat tiny pond critters.

The goal of this activity is to design, build and test a house or toy for an animal.

In this activity, learners experiment with the Stroop Effect by challenging themselves and others to try and read a list of colors as quickly and accurately as possible, with a twist.

When was the last time you took a really close look at a leaf? In this activity, learners will use leaves and simple materials to make colorful leaf rubbings.

In this activity, learners use food scraps from the kitchen to grow new vegetables.

In this activity, learners will build a design and build a place for pollinators to drink from.

In this activity related to computer programming, learners give directions to a "robot" (either an adult or another learner) and find out which instructions the robot is able to follow, and how their

Visitors observe a bottle with a balloon attached around the mouth. The bottle contains a solution of yeast, sugar, and water.

Many germs spread by our hands, and often times, people don't wash their hands well enough to get rid of germs.

In this activity, learners will take a step back and learn the history of the land they live on, and the people who used to live on it.

In this activity, learners will dissect a pumpkin or winter squash to learn the parts of the plant. This activity gets your learner hands on with every part of the plant and will be messy.