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Geochemical cycles  
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In this problem-based learning module, learners study phytoplankton blooms along the U.S. coast. Phytoplankton form the basis of the marine food web, regulate carbon in the atmosphere, and are responsible for half of the photosynthesis that takes... (View More)

In this laboratory activity, students investigate chromophoric dissolved organic matter (CDOM) through gradual dilution of black, green and chamomile tea. Through this activity, students discover how CDOM can dominate the absorption of sunlight, how... (View More)

In this laboratory activity, students experiment with becomes CO² concentrations in water as a prelude to investigating the marine carbon cycle. The activity includes a worksheet and assessment questions. Tap water, ocean water (real or simulated),... (View More)

This is a lesson about the evidence for life on other planets. Learners will play a game to examine processes in cellular metabolism and explore both direct and indirect evidence for fingerprints of life. Includes teacher notes, learning objectives,... (View More)

Audience: Middle school

This is a set of lessons about the Moon. Learners will focus on answering the essential question: What are the challenges engineers and scientists are working to solve as NASA prepares to send humans to live and work on the Moon for extended periods... (View More)

In this lesson, learners explore the steps in the carbon cycle and draw conclusions about the importance of the carbon cycle in the planetary temperature system. The lesson models scientific inquiry using the 5E instructional model and includes... (View More)

Keywords: Carbon cycle
Audience: Elementary school, Middle school
Materials Cost: Free

This chapter provides an overview of the science of studying the Earth system, with a focus on understanding the connections among phenomena that can be traced through the energy, hydrological and biogeochemical cycles, on a range of time and... (View More)

Audience: Elementary school, Middle school, High school
Materials Cost: Free

In this hands-on activity, students conduct bottle experiments to learn about the conditions that best facilitate the decomposition of organic material in soil. In the lab, they observe changes in the decomposition of vegetable scraps by varying the... (View More)

In this field activity, students learn about the five soil-forming factors and their influence on soil properties such as moisture, temperature, color and texture. They identify factors such as slope, shade, plants and compaction, and investigate... (View More)

This is a lesson where learners trace the path that atoms take as they change form and move throughout the cycle of matter and compare this to the flow of energy. The lesson models scientific inquiry using the 5E instructional model and includes... (View More)

Keywords: Biology
Audience: Elementary school, Middle school
Materials Cost: Free