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In this activity, learners construct possible food webs for six different ecosystems as they learn about the roles of different kinds of living organisms.

This guide outlines how to plant a garden even if you don't have a yard!

In this activity, learners make self-assembled polymer spheres.

In this environmental health activity, learners grow and observe bread mold and other kinds of common fungi over the course of 3-7 days.

In this activity, learners investigate the process of osmosis by adding salt to a sealed bag of raw carrots and comparing it to a control.

In this activity (on pages 34-39), learners make a fairly detailed model of DNA using licorice and gumdrops.

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

In this activity, learners compare and contrast their own skin (including the area covered) with that of an orange.

In this activity on page 7 of the PDF, learners explore how engineers characterize building materials.