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In this matching game, learners study the limits of life on Earth to see what other places in the solar system might sustain microbial life.

Build your own version of a favorite carnival game, in which a marble races down a maze consisting of rows of nails.

In this optics activity, learners conduct an experiment to find out why two eyes are better than one!

In this design challenge activity, learners invent a pinball-like game where a kick stick hits a ping pong ball into a target that buzzes.

In this engineering activity, learners design their own board games.

In this online game, learners must purchase power plants for their city.

In this activity, learners follow clues to find five puzzle pieces, then assemble them. This activity works well with a whole group, individuals, or families.

In this outdoor game, learners play the roles of gray or red squirrels gathering and storing a supply of food in "fall" and recovering enough of them to survive the "winter." Learners carry bags repre

This activity puts a mathematical twist on the familiar “guessing jar.” No guesses allowed, estimates only.

Teams of learners use a series of stick figures made from pipe cleaners to model a dance routine. Then, they use this model to communicate to another learner who performs the dance routine.

In this activity, learners will put a set of containers in order by capacity. Would the tallest container hold more or less water than the wide, short one?

In this online game, learners run an outer space drink stand and thirsty alien customers are on the way.

This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest.

In this outdoor activity and fun race, learners first find the most common type of tree in a forest site.

Birds' beaks are designed to allow birds to get the most of whatever food they need. In this activity, learners get an idea of how different beak shapes suit different food sources.

Learners make a counting/estimating jar to exchange with friends or bring home.

In this game, learners take turns guessing toy animals from around their house based on the toy's characteristics.

In this activity, learners use a model for how fishing affects marine life populations, and will construct explanations for one of the reasons why fish populations are declining.

In this activity, learners model, on a human-sized board game, how changes in water temperature may affect fish distributions and, ultimately, fisheries.

In this game, learners match descriptions of marine debris (shoes, batteries, paper towels, etc.) to images of these items.