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In this activity on page 3 of the PDF, learners visualize the relative size and structural differences between microbes that have the potential to cause disease.

In this math activity, learners will create a scale diagram of their backyard or other outdoor area on graph paper.

In this activity, learners use measurement concepts to make models of what their body parts might look like if they were a snake or a chameleon.

In this math activity, learners pretend there is a special store that lets you pay for toys by their height in pennies.

In this activity on page 1 of the PDF, learners compare the relative sizes of biological objects (like DNA and bacteria) that can't be seen by the naked eye.

In this fun and simple hands-on astronomy activity, learners construct a model of our place in the Milky Way Galaxy and the distribution of stars, with a quarter and some birdseed.

This activity (located on page 2 of PDF) introduces learners to the real size of animals using nonstandard measurement.

In this activity, learners create a model using metric measuring tapes and atmosphere composition data.

In this activity, learners create their own archaeological profiles.

In this activity, learners find Xi'an, the archaeological area in China where the Terra Cotta Army was discovered, on a map or globe and look more closely at the relationship of the warrior site to ot

In this activity, learners examine the culture and history of the tomb site.

This game introduces learners to the scale of the greenhouse gas problem, plus technologies that already exist to dramatically reduce our carbon emissions and prevent climate change.