The basics of number theory and set notation are explained in a highly approachable way in a self-contained lesson plan and worksheet. Introducing the vocabulary and concepts from ground zero and building to more complex ideas of...

Scholars learn how to write number theory proofs by viewing a video reviewing techniques for proofs on divisibility, parity, and consecutive integers. They then write proofs for a handful of conjectures on a worksheet.

This extensive and far-reaching collection of worksheets puts a new twist on many basic concepts. Learners use multiplication to trace a path from one point to another, tile a plane by converting between improper and proper fractions,...

We know about the light spectrum, the age spectrum, and sound spectrum, but do chemical reactions also occur on a spectrum? Young scientists experiment with partial reactions on a spectrum and observe the color changes. Then, they...

Primary and secondary sources are the focus of a instructional activity that showcases the important role women played during the American Revolution. Pairs review sources and discuss their findings. A close-reading of an informational...

Why did many Tennesseeans support the 1925 Butler Act, which forbade the teaching of evolution? Using several primary source documents and a brief video clip, your young historians will draw connections between the broader historical...

Was the Scopes trial more complicated than a simple debate between evolutionists and creationists? As part of a structured academic controversy (SAC) activity, pupils consider multiple perspectives of the Butler Act and engage in close...

Did Scopes violate the Butler Act? Why did so many Americans follow the Scopes trial? See analytical reading in action with a fantastic five-day lesson plan in which class members consider the historical context that provoked public...

Could you go without your cell phone for 48 hours? Pose this question to your class and then read the article provided here. Pupils mark the text and and complete a graphic organizer that requires the use of textual evidence.

This optional instructional activity introduces the class to the idea of a minimum spanning tree. The activity focuses on determining an algorithm that will find the most efficient path in a network to transfer data. 

[Free Registration/Login may be required to access all resource tools.] An introduction to Charles Darwin and his theory of evolution by natural selection is offered for students. Meet the writers who influenced Darwin to develop his...

[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will explain the law of conservation of mass, the law of definite proportions, and the law of multiple proportions. They will also...

[Free Registration/Login may be required to access all resource tools.] Discusses what a tectonic plate is and how scientists can recognize its edges, how the plates move by convection in the mantle, the three types of plate boundaries...

[Free Registration/Login may be required to access all resource tools.] Find out how coevolution can occur in nature and identify the endosymbiotic theory.

This lesson focuses on developing a way to cross all 7 Bridges of Konigsberg without crossing any of them more than once. Euler discovered it was impossible, but he developed the idea of using graph theory to determine if it would be...

This lesson focuses on probability theory for predicting the outcome of flipping a coin, and then flipping it multiple times.

Learn about atomic structure and the multiple theories of atomic structure in this simulation.

[Free Registration/Login may be required to access all resource tools.] Discusses how cells are organized in living things and explains the origin and significance of multicellular organisms.

In this interactive tutorial you will learn about the theory of continental drift and why it was ultimately rejected. Then learn about the theory of plate tectonics and the evidence to support it. Lastly discover the types of boundaries...

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...

The beginning of an informative tutorial on antimatter, covering quarks, hadrons, baryons, mesons, leptons, and neutrinos.

This unit covers introductory concepts of mixtures and solutions. Students think about how mixtures and solutions, and atoms and molecules can influence new technologies developed by engineers. The first lesson explores the fundamentals...

[Free Registration/Login may be required to access all resource tools.] Explains how to describe matter in the solid state, about the properties of liquid matter and gases, and what the relationship between energy and states of matter is.