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In this activity, learners use models of fossilized dinosaur teeth to understand how dinosaur teeth were used.

In this biology activity, learners use plastic pipettes to cut wells into the solid gel layer of agar in petri dishes and place solutions of simulated antigen and antibody preparations into the wells.

In this set of outdoor games, learners play the role of monkeys that are trying to get enough resources (food, shelter, and space) to survive.

In this activity (page 10), learners explore how molecules self-assemble according to forces of attraction and repulsion.

In this activity, learners follow step-by-step instructions to build a gel electrophoresis chamber using inexpensive materials from local hardware and electronic stores.

This is a series of quick activities/demos and pre-assessment tools that evaluate learners' current understanding of microbes and introduce them to basic information about microbes.

In this activity, learners examine antibodies and antibody recognition using a model.

In this activity, learners examine the different materials gardeners add to their soil, and discuss how these materials are important for plant growth.

This simulation of laparoscopic surgery enables learners to practice and to learn this modern surgical technique.

In this activity on page 5 of the PDF, learners compare water with artificial urine to see how urinalysis works. Learners use urinalysis test strips to test for glucose and protein in the fake urine.

In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

In this outdoor activity, learners design devices that will catch prey or gather plants.

In this two-part activity about the connection between the lupine plant and butterflies, learners first read "Miss Rumphius," a storybook about lupine by Barbara Cooney.

When it rains, water can collect on top of and seep into the ground. Water can also run downhill, carrying soil and pollution with it.

In this outdoor activity, learners cut through and investigate rotten logs and then make log-profile puzzles for each other.

This activity models the mass coral spawning event that takes place at Flower Garden Banks National Marine Sanctuary every August.

In this outdoor activity, learners turn the fun of feeding wild birds into an investigation of bird behavior.

In this activity, learners use household materials to investigate and explore their ability to smell an odor.