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This is an activity about turbidity, or the amount of sediment suspended in water.

In this activity on page 7 of the PDF (Chemistry—It’s Elemental), learners use iodine to identify foods that contain starch.

In this activity, learners create a biosphere in a baggie.

In this group activity, learners will explore the characteristics, functions and uniqueness of the mangrove tree.

In this activity (page 4 of the pdf), learners build a model of a tide pool, using chicken wire, paper mache, and other craft materials.

In this activity, learners simulate the separation techniques that materials recovery facilities (MRFs) use and then design their own series of recycling techniques.

In this activity (on pages 9-14), learners dissect a real flower -- the kind of work botanists do.

In this family or group activity, learners conduct a chromatography experiment to reveal the colors that leaves "hide" under their green pigments.

In this two-part activity, learners compare and contrast a variety of life cycles to better understand different organisms and how they develop.

In this activity, learners survey living organisms near where they live or go to school, and create a local field guide.

In this activity, learners will discover how the thin layers of amphibians' skin allow water and other chemicals to pass through it.

Ivy Rutzky, a scientific assistant at the American Museum of Natural History, introduces an activity where learners create a scientific illustration of a monarch butterfly.

In this activity, young learners will make their own flower seed nursery in an egg carton.

In this outdoor, nighttime activity, learners gather around a brightly lit, white surface and study the behavior of nocturnal animals attracted to the light, particularly night fliers.

Learners develop an understanding of air pressure in two different activities.

In this activity, learners play a game to simulate the food chain.

In this plant science activity, learners role play as vegetables and weeds competing for nutrients.

In this outdoor science/art activity, learners investigate spider webs by using string to create their own spider webs.

In this activity on page 7 of the PDF (Plants—The Green Machines), learners examine the effects that light and air have on green plants.

In this activity, learners use maps to locate the Northwest Coastal region.