View a global map showing cloud fraction from January 2005 to November 2008. Learn how clouds have a warming and cooling influence depending on altitude.

This article highlights facts about clouds and their role in the Earth's climate change.

"Which color, black or white, reflect energy?" "Which color absorbs energy better?" Through this activity, students will find the answers to these questions, and they will then be able to relate their findings to the construction of spacesuits.

This NASA video shows how Newton's laws can be used to calculate an airplane's cruise performance. Learn how to rearrange the lift and drag to provide a maximum performance. [10:54]

This lab activity allows students to calculate the diameter of the moon using proportions. Also follow links to other NASA lesson plans.

The MESSENGER (MErcury: Surface, Space ENvironment, GEochemistry and Ranging) mission is a scientific investigation of the planet Mercury. This site provides information about its mission objectives and management.

This video [12:28] shows how Newton's law of motion relates to the drag of an airplane. Watch as an instructor shows how the molecules colliding with the airplane create drag.

The purpose of NASA's Earth Observatory is to provide new satellite imagery and scientific information about our home planet to the public. The focus is on Earth's climate and environmental change.

Information and activities looking at the impact of industrial and agricultural practices on global warming.

Prepared by NASA, this site provides a detailed look at the Earth's moon. The menu tabs are divided into overview, photo gallery, and facts and figures.

Part of the NASA website, this is a reprint of an article in the Journal of the Royal Astronomical Society of Canada about Edwin Hubble's life and accomplishments, stressing his role in the development of modern astronomy.

This detailed educator's guide provides a lesson in designing the structure of a spacecraft. The design challenge contains pre-lab activities and instructions for how to test the models.

This classroom activity teaches students to work in groups to design and build a thermal protection system simulating one on a space vehicle. Provides background information, lesson plans, and assessment questions.

This educator guide provides students with a challenge to design, build, and test a water filtration system, simulating what is used in a spacecraft. Includes background information, lesson plans, and extension activities.

The objective of this lesson is for students to learn the location of water and the importance of water to life. Students will learn about osmosis, soil samples, salinity, and more.

This small collection of lesson plans introduces students to exploration by comparing the settlement of Jamestown to space missions. Find background information and links to other lesson plans.

This lesson has students examine different land to determine whether settlement is affected by an area's location, soil, and weather.

These lesson plans allow students to learn about space exploration while refining their math skills. Each activity provides instructions for both the educator and student.

This NASA educator guide provides teachers with an outline for teaching a unit about the Moon. Find lessons and hands-on activities about the different parts of the Moon and lunar landing sites.

The Amazon River rises each year from December to May, forcing fish to flow through the tops of trees. Learn how satellites and technology track the rising and fall of the Amazon River and how this affects the rain forest.