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

In this activity, learners make their own bug boxes and test the habitat preference of selected "minibeasts" (bugs).

In this activity, learners explore how musical instruments are engineered.

In this math lesson, learners record and graph plant growth and interpret data. Learners plant seeds, and once the seeds sprout, record the change in height of the plants for several days.

In this activity, learners design and build a simple wind vane —one of the oldest kinds of weather tools— and use it to show wind direction.

In this activity, learners make a Benham Top to explore visual illusions and optics.

This activity introduces learners to Native Americans as people who depended upon nature in the past and continue to emphasize the importance of nature in the present.

This activity is a hit for family events and all ages—some will finish in 45 minutes; others can go on for hours.

Choose a recipe to double (or triple, quadruple, or halve). Show everyone the recipe and engage them in figuring out: How much will we need to increase the recipe to feed everyone?

This is a lesson plan for an activity in which learners, playing the role of archeologists, use math concepts about number bases to decipher the Dresden Codex, an ancient Mayan document.

In this on site "field trip" activity (located on pages 6-9 of PDF), learners get hands-on experience identifying building materials by playing "Building Bingo".

In this math lesson (on Page 13), learners predict and simulate the likelihood of an event occurring.

In this activity, learners imagine what the world might look like if we could build an elevator to space!

In this activity, learners explore how engineers have improved roofing designs and materials in order to protect the contents of buildings.

In this activity, learners explore how the process of folding has impacts on engineering and is evident in nature.

In this activity, learners will use Google Sky to observe features of the night sky and share their observations.