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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.

In this activity, learners create their own weather forecast map.

In this activity, learners use colored candy to represent subatomic particles and make a model of an atom (Bohr model).

This activity helps the learner answer the question: "What environmental problems arise due to animal and human overpopulation and what might need to be done to combat these problems?" Learners play a

Put the math of measurement, numbers, and everyday life into improvisational skits.

In this investigation, learners gather information on various food items during a field trip to a local grocery store.

In this activity, learners are divided into teams.

In this physical sciences activity, learners explore how forensic investigators collect prints from a crime scene. Learners make hand impressions in damp sand and analyze the patterns they observe.

In this data analysis and environmental science activity, learners evaluate the feasibility of wave energy as a practical alternative energy source using ocean observing system (OOS) buoys.

In this activity (pages 5-7), learners investigate the properties of smart materials, which are materials that respond to things that happen around them.

Build time sense into the schedule by asking learners to predict what can happen in a certain amount of time: We have 20 minutes before outdoor time. What can you get done?

In this activity, learners will explore how their own eyes work by experimenting with their photoreceptors.

In this activity, learners use plastic water bottles, wood, and water to build an inexpensive and portable tool to demonstrate one atmosphere of pressure at sea level.

In this activity (on pages 55-66 of PDF), learners fold paper into origami shapes and then combine several identical shapes into a three-dimensional structure.

In this activity, learners identify different classes of matter based on physical properties.

In this activity, learners make their own encrypted code to pass along secret messages using a printable cipher wheel.

In this activity (page 4), learners work in groups to plan and build large structures using recyclable materials they have brought from home.

In this activity, learners will listen to as many radio stations as possible to discover that AM radio signals can travel many hundreds of miles at night.

In this activity, learners use simple items to construct a device for indicating air pressure changes.

In this activity, learners create a kind of balance device using a wire coat hanger, some string, and paper cups.