This Weather, Climate & Water Cycling unit has students investigating small-scale storms, mesoscale weather systems and climate-level patterns of precipitation.

[Free Registration/Login may be required to access all resource tools.] After studying the Krebs Citric Acid Cycle, students will be able to identify what happens to the product of glycolysis and explain the steps and results of the cycle.

Video talks about the carbon cycle and uses a computer as a metaphor to show how the cycle can be disrupted by climate change. [3:55] Includes a short quiz and a list of additional resources to explore.

This unit on matter cycling and photosynthesis has students investigating the idea that all food comes from plants.

This tutorial explains the rock cycle--from beginning to end! It is full of activities, assessments, games, slideshows and all kinds of interactive material. Learn what rocks are made of and how they change from one form to another....

[Free Registration/Login may be required to access all resource tools.] The process of cell division in eukaryotic cells is carefully controlled. The cell cycle is the life cycle of a cell, with cell division at the end of the cycle....

A colorful diagram of the rock cycle showing the stages that rocks go through as they are transformed by different processes such as weathering, lithification, and crystallization.

A simplified version of the rock cycle showing the three types of rocks and the transformational processes that occur between each pair of rock types.

An investigation that is part of a series of lab lessons that expose students to Earth Systems through research, data, and visualizations. In this lab, students will follow the pathway of water on a big scale and a small scale down to...

This lesson will introduce the Kreb's cycle and explain how it is used to convert pyruvic acid into carbon dioxide. It is 2 of 6 in the series titled "Krebs Cycle."

This lesson will introduce the Kreb's cycle and explain how it is used to convert pyruvic acid into carbon dioxide. It is 3 of 6 in the series titled "Krebs Cycle."

This lesson will introduce the Kreb's cycle and explain how it is used to convert pyruvic acid into carbon dioxide. It is 1 of 6 in the series titled "Krebs Cycle."

Give your students the tools to live and think green with these fun educational projects and art activities. Projects are useful for helping students learn to make good environmental decisions. [PDF]

Learn about the rock cycle, sedimentary rocks, and fossil fuels in this tutorial.

Students are introduced to the debugging cycle and the steps in the debugging cycle.

Nutation is a small cyclical motion superimposed upon the steady 26,000-year precession of the Earth's axis of rotation. It is mainly caused by the gravitational effect of the 18.6-year rotation period of the Moon's orbit. The main...

This file guides students through learning about sedimentary, igneous, and metamorphic rocks along with an introduction to the rock cycle. Students can complete work in small groups or individually on their devices.

In this Unit, you will use vertex-edge graphs and Euler Circuits to help find optimum paths. Included are two lessons that help you develop the understanding and skill needed to solve problems about optimum paths and conflicts.

Students explore the biosphere's environments and ecosystems, learning along the way about the plants, animals, resources and natural cycles of our planet. Over the course of lessons 2-6, students use their growing understanding of...

Have you ever needed someone to help you out with your writing? This site offers help to students and teachers. The lessons and resources are organized based on the 6 Writing Traits model. An especially interesting feature of the site is...

A slideshow, a karaoke song to sing along to, and a short multiple-choice quiz on sedimentary rocks and how they are formed.

In this amazing online tutorial you will learn about how water, mass wasting, weathering, and erosion have help shape the landforms on Earth. The lesson includes many helpful interactive materials to prepare help you understand landscape...

[Free Registration/Login may be required to access all resource tools.] Cells do eventually wear out. At that point, they need to be replaced. This is one reason that your cells divide. New cells that result after cells divide are also...

Two lesson plans are found in this site. Lesson Plan 1 is geared to grades 6-9. In this plan, student's will be able to list the different stages of the blow fly's life cycle and understand how the life cycle and ADH (accumulated degree...