This module on measuring nitrates and their effects on water quality is from a larger series on water quality investigations. It provides background information on nitrates and how it affects water quality. It also contains both a pre-test and post-test, a laboratory investigation, and a self-study game. The purpose of the site is to help students understand the sources of nitrates and the role that ... Full description.

This module on measuring temperature and its effects on water quality is from a larger series on water quality investigations. The purpose of the site is to help students recognize that temperature can affect the organisms that live in water, describe the factors that can change the temperature of a body of water, and how to measure, graph, and interpret the effects of temperature on fish. It provides ... Full description.

This site offers facts and information, photographs, classroom activities, games, and other materials related to marine biology and geared towards elementary schol students and teachers. Topics include fish, mollusks, crustaceans, echinoderms, mammals, endangered species, and others. Full description.

This is a PDF guide on how to use ImageJ image processing software to understand and manipulate astronomical images. The guide begins with instructions on how to download ImageJ, plus some additional astronomy-related plugins, followed by directions on how to install everything correctly. There are three lessons that will help the user get oriented with some of the most basic image processing skills ... Full description.

This picture book is designed to introduce children to the Earth's atmosphere and its importance to life on Earth. It also introduces how the addition of new gases (e.g., ozone) contributes to changing the quality of air we breathe. With an understanding of how our atmosphere works, we can begin to understand how our activities may be contributing to some of those changes in air quality. The back ... Full description.

This is the third in a series of four ChemMatters issues devoted to NASA?s Earth Observing System (EOS) Aura mission and it focuses on the chemistry of the mission. ChemMatters is designed and published for teachers to use as a supplement to their first year high school chemistry course, and as a resource for other high school science teachers. Article titles are: Whose Air Is It Anyway (global circulation ... Full description.

This activity guide illustrates how teachers can use planetary comparisons between Earth and Mars to teach basic geologic activities - i.e. volcanoes, impact cratering, layering, river processes, and crosscutting relationships to help the students understand a planet's history. This lesson is using current science results, as it contains actual orbital data from the Mars Global Surveyor mission. The ... Full description.

This website covers scientific notation, orders of magnitude, and plotting using both linear and log scales. Students determine the relative scales of objects in the Universe from the very small to the very large. Many hands-on science experiments are available. Full description.

As part of the GLOBE program's 2003 Teacher's Guide, this site provides information and activities related to understanding hydrology. Sections featuring protocols and activities cover collecting water samples, conducting tests such as dissolved oxygen, conductivity and salinity, modeling a local watershed, comparing local water to global data, modeling water balance and looking at how water chemistry ... Full description.

Virtual Earthquake is an interactive web-based program designed to introduce the concepts of how an earthquake epicenter is located and how the Richter magnitude of an earthquake is determined. Virtual Earthquake shows the recordings of an earthquake's seismic waves detected by instruments far away from the earthquake. The instrument recording the seismic waves is called a seismograph and the recording ... Full description.