Prevent the Federal Reserve System from becoming a dry topic for your middle and high schoolers by using an informative, engaging resource! The cartoon takes your class on a journey with aliens from the planet of Novus to observe the...

How do Earth's changes affect humans? Pupils learn about physical and chemical changes on Earth and how they lead to erosion, earthquakes, and volcanoes. Using the text, they also explore the concepts of electricity and magnetism by...

The cycle of energy is important to many different systems on Earth. Scholars use questioning and observation to investigate the differences between renewable and non-renewable resources and how they relate to global changes. They...

Explore a variety of science concepts in an interactive textbook created for middle school scholars. A lengthy table of contents takes readers to pages comprised of a subject overview, outline, and summary. Follow links further to find...

Are spiders related to crabs? Study the order of arthropods with a reading selection about animal diversity. It provides details about each class within the order, as well as vivid pictures and explanatory charts. 

Algebra concepts are all wrapped up in one nice bow. The resource combines all the concepts typically found in Algebra I and Algebra II courses in one eBook. The topics covered begin with solving linear equations and move to linear...

The General Chemistry Virtual Textbook, or Chem 1, is broken into several sections covering various aspects of topics related to chemistry. This section deals specifically with the properties of gases including subtopics such as the...

This section explores how to design and conduct surveys that accurately reflect the perspectives of a larger group of people by identifying unbiased sample groups and by writing unbiased questions.

Through illustrated examples and interactive practice problems, students explore problems that involve relative velocity- where the actual motion of an object is different than its motion relative to a stationary observer.

The harrowing experiences of Nellie Bly as she observed undercover the workings of Blackwell Island Insane Asylum are reproduced here as they were originally published.

Presents images of common weather phenomena. Book includes audio narration in 17 additional languages with text in English.

This reference from the McGraw-Hill CCCS Literacy eHandbook discusses the importance of recalling explicit details. The importance of inferencing skills with a how-to graphic organizer for making inferences are included. Students may...

This physics tutorial helps students categorize waves based on distinguishing, observable characteristics.

Observe the animation of the three cars. Use the animation to answer three questions about their acceleration and velocity.

Observe the three planes in an animation where each plane flies amidst a wind that blows at 20 mph. Learn how tailwinds affect the resultant velocities.

Observe the motion of two cars taking off at a stoplight, and make meaning of the accompanying graphs to answer some motion questions.

Observe the motion of the two-stage rocket and the corresponding, animated velocity-time graph in these illustrations.

Explore the evidence for evolution: anatomy, molecular biology, biogeography, fossils, & direct observation.

This lesson focuses on symmetry in physics. The laws of nature are the name given collectively to the physical rules (usually expressed as mathematical equations) that try to explain everything we observe in the universe.

This textbook excerpt illustrates the reactions observed to occur between minerals and magma, and the order of these reactions during magma crystallization that was described by Norman Bowen in the 1920s.

This lesson focuses on map coloring and the problem of proving that 4 colors would work for all maps. Francis Guthrie had to color a map of counties in England. He observed that four colors seemed to suffice for any map he tried, but he...

Discover how Charles Darwin developed the theory of evolution through his observations in the Galapagos Islands.

These pages are part of a site called "Evolution," that accompanies a textbook by the same name. Mark Ridley is the author, and in this section he discusses the evidence for evolution.

Learn how to think like a scientist.