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Plankton Feeding
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This activity provides a hands-on experience with a scale model, a relatively high viscosity fluid, and feeding behaviors.

Who Can Harvest a Walleye?
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This activity focuses on interactions within Earth systems and the effects of human activities. In this activity learners build a biomass pyramid.

Water Breathers
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In this activity and/or field trip, learners investigate the water currents that aquatic animals create when they breathe, feed, and propel themselves through water.

Clippy Island: An Investigation into Natural Selection
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In this activity, leaners will observe the process of natural selection on a population of birds called 'Springbeaks' over four seasons of breeding on an isolated environment called 'Clippy Island.' L

Engineer A Bird Feeder
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In this activity, learners of all ages will design a functional bird feeder using familiar, every day materials.

Owl Pellets
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In this activity (page 7 of the PDF), learners will investigate the contents of owl pellets. Learners will discover how owls digest their food as well as the kind of animals they eat.

Frog Eggs
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In this activity, learners compare frog eggs to chicken eggs to better understand why frog eggs need water. Learners compare a boiled chicken egg to "frog eggs" represented by boiled tapioca.

For the Birds
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In this activity, learners will explore nature by creating food for birds. Learners will develop fine motor skills and engage in nature observation through this activity.

Shape Up!
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In this activity (25th on the page) about learning and memory, learners explore a training method that animal trainers employ called "shaping." Working in pairs, learners will attempt to "shape" each

Chicken Wing Exploration
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In this activity, learners explore cooked chicken wings and identify the various parts including: bones (radius, ulna, humerus, shoulder joint, elbow joint), tendons, and cartilage.

Air-filled (Pneumatic) Bone Experiments
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Just like birds, some dinosaurs had air-filled (pneumatic) bones, which made the dinosaurs' skeletons lighter.

Design a Flower
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In this activity, learners learn about the adaptations that flowers have developed which support pollination. Learners also list their personal preferences (i.e.

Rearing Monarchs
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As a long-term project, you can rear monarch butterflies at home or in a classroom.

What's in the Water?: Biotic and Abiotic Elements in Aquatic Ecosystems
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In this investigation learners explore the differences between, and interdependence of, living and nonliving elements in a water ecosystem.

Close, Closer, Closest
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In this activity, learners perform an experiment that models a chromatography-like process called electrophoresis, a process used to analyze DNA.

Cartesian Diver
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In this quick activity (page 1 of the PDF under SciGirls Activity: California Fish), learners will build a simple Cartesian Diver in an empty 2-liter bottle.

Dinosaur Bone Experiments
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This activity features two connected hands-on activities about dinosaur bones.

The Variety and Roles of Microbes
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In this activity, learners use sets of cards to assign microorganisms to different groups.

Thymus DNA Extractions
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This laboratory exercise is designed to show learners how DNA can be extracted from a chunk of thymus (sweetbread) or liver.

Amphibian Skin
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In this activity, learners explore the concept of permeability to better understand why amphibians are extremely sensitive to pollution.