Explore the process of active transport.

This comprehensive study guide covers the main terms and concepts needed for an earth science unit on climate zones and biomes. Review questions are included at the bottom of the study guide.

[Free Registration/Login may be required to access all resource tools.] Plants are producers, which means they are able to make their own food, as well as "food" for other organisms. Plants are also autotrophs - they collect energy from...

[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about atmospheric processes involving air pressure, air density, and temperature. Includes a few questions to check for understanding.

[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about geological processes that took place during the Precambrian Era. Includes a few questions to check for understanding.

Learn how the enzymes in the digestive system help with the digestive process in the human body.

Understand the process of reading the mRNA code in the ribosome to make a protein during translation.

Understand the process of meiosis to produce two sex cells, or gametes.

Understand the cellular behind the process of fermentation.

Explore the light reaction process of photosynthesis.

Explore the passive transport process of diffusion.

Explore the process of cell transport across a cell membrane.

[Free Registration/Login may be required to access all resource tools.] When you think of the processes of breathing, the lungs probably come to mind. The lungs are the main organ of the respiratory system. However, many other organs are...

[Free Registration/Login may be required to access all resource tools.] The theory of evolution by natural selection means that the inherited traits of a population change over time. Inherited traits are features that are passed from one...

Using just popsicle sticks, paper clips, straws, pencil, binder clips, and rubber bands, students are challenged to build a structure that jumps into the air. This mighty machine will jump up, sideways, or flips over. This website...

[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about how the three types of rocks form and convert from one to another. Includes a few questions to check for understanding.

Understand how plant hormones allow plants to live in their environment.

[Free Registration/Login may be required to access all resource tools.] Discusses the characteristics of temperature and heat and how they behave. Includes some questions to check for understanding.

A challenge for students to build a lightweight wing structure that is 12 inches long and can hold up a heavy load without deflecting. This site contains the challenge, a lesson plan, tips, and a place for students to document their...

Make a cantilever that can hold 5 marbles at least 12 inches away from its base structure with this engineering challenge. The site contains the challenge, a lesson plan, tips, and a place for students to document their engineering process.