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Green Travelers
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In this activity (on pages 23-29), partners use the Plant Traveler Cards, along with a world map and map worksheets, to follow plants such as cassava, chocolate and coffee that grew first in one part

Sliding and Stuttering
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Learners use a spring scale to drag an object such as a ceramic coffee cup along a table top or the floor.

Onion DNA Extraction
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This laboratory exercise is designed to show learners how DNA can easily be extracted from onion cells using simple materials.

Moisture Makers
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In this outdoor activity, learners compare the moisture released from different kinds of leaves and from different parts of the same leaf, by observing the color change of cobalt chloride paper.

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

The Colors of Flowers
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In this activity, learners perform an experiment to find out what determines a flower's color.

Hopper Herding
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In this outdoor activity and game, learners roundup a "herd" of hopping insects and find out how many different kinds or species are in their herd.

Sweetly Balanced Equations
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In this (edible) activity, learners balance chemical equations using different kinds and colors of candy that represent different atoms. Learners will work in pairs and explore conservation of atoms.

Tracking Otters
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This activity (on pages 38-43) has learners simulate the way scientists track and map the movement of otters in the wild using radio trackers.

The Thousand-Yard Model
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This is a classic exercise for visualizing the scale of the Solar System.

Modeling the Seasons
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This activity provides instructions for learners to create models of the Earth and then to model a "day" on Earth as well as modeling the seasons.

Rover Races
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In this activity, learners experience some of the challenges of "tele-operating" a robotic vehicle on another planet when they design and execute a series of commands to guide a human "rover" through

Pea Brain!: Explorations in Estimation
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In this activity, learners use two different techniques to estimate how many little things fit into one bigger thing.

Using Chemical Change to Identify an Unknown
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In this activity, learners will develop a method to test five similar-looking powders (baking soda, baking powder, cream of tartar, detergent, and cornstarch) with four test liquids (water, vinegar, i

Density Intensity
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In this activity on page 12 of the PDF (Rethinking the 3 R’s: It’s Easy to be Green), learners examine how recyclable materials are separated by various properties at recycling centers.

Make Pan Pipes
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This is a simple activity for learners to create a traditional musical instrument. Pan Pipes have developed all over the world in different cultures, from South America to Greece and China.

Building a 3-D Space Maze: Escher Staircase
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In this activity (page 95 of the PDF), learners create Escher Staircase models similar to those that were used by Neurolab's Spatial Orientation Team to investigate the processing of information about

Energy Choices Board Game
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This board game teaches learners about energy decision making. Players select cards that determine the transportation and home design that will influence their expenses as they play.

Exercise in Creating Drawings for Field Notebooks
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Learners draw and describe a leaf, and then re-find leaves drawn and described by other learners. Learners can observe leaves outside, or leaves may be brought into the classroom.

Supermarket Science: The King Sooper Lab
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In this investigation, learners gather information on various food items during a field trip to a local grocery store.