Scholars work through three different activities applying their knowledge of total internal reflection (TIR). First, they simply identify which diagrams create TIR and which don't. Next, they match different types of boundary behaviors...

For this World Trade Organization worksheet, students read the article, answer true and false questions, complete synonym matching, complete phrase matching, complete a gap fill, answer short answer questions, answer discussion...

Blast off! How do satellites, space shuttles, and space stations escape Earth's gravity and achieve orbit? Young astronauts study rocket science (literally) with an interactive lesson. They discover the four main uses for satellites, how...

The United States has more per capita emissions than any other country in the world. An eye-opening simulation encourages users to explore environmental goals and factors that affect climate change by balancing different priorities....

The Space Race saw the Soviet Union and the US go from competitors to partners. Scholars read a letter regarding the first docking of the US and Soviet space craft. Young historians also complete a written assignment and participate in...

Reflection seems simple to understand, but without a complete understanding, pupils struggle with ray diagrams, specular versus diffuse reflection, total internal reflection, and image formation. An engaging interactive provides three...

Stunning images make up this slide show on the inner planets of our solar system. While visiting Mercury, Venus, Earth, and Mars, viewers also are introduced to the International Space Station and the Spirit Rover on Mars. Follow this...

Without the benefit of history, Western Europe in the 1940's had no idea what was about to befall them. Class members use primary sources, including political cartoons, videos, and internal documents, to analyze how much of a threat...

Britain's decision not to bomb German death camps in World War II has provided many questions for historians, but with a primary source analysis lesson, high school students may be a step closer to finding out the truth. Learners read...

Slavery not only involved the forced migration of African people from their homes, it also meant the forced removal of people within the United States. Using data and interactive graphics, scholars see how the tragedy of human slavery...

Hop from country to country to practice knowledge of international capitals using an interactive video game. Pupils take control of frog avatars and direct them to leap from the name of a capital to its home country. The video game...

Sometimes one trip shakes up the entire world. When President Richard Nixon traveled to China, he defied international and political boundaries. Nixon was the first American president to visit mainland China, which was a communist nation...

In this everyday editing learning exercise, students correct grammatical mistakes in a short paragraph about Thomas Hopkins Gallaudet. The errors range from punctuation, capitalization, spelling, and grammar.

While the president often appears to jet around the world on diplomatic missions, having the commander in chief travel abroad is a modern phenomenon, starting in the 20th century. Using a graphic, learners explore which presidents...

Young historians turn into detectives in a thought-provoking activity on the Challenger Explosion. The activity uses an image of President Reagan watching the Challenger explode on live TV to help academics practice historical analysis....

Scholars analyze a propaganda poster against communism. The resource uses the poster to examine the domino theory and containment policies used by the United States to stop the spread of communism in Vietnam. Scholars work in pairs or...

In this disasters worksheet, students complete multiple choice questions about Hurricane Katrina, the World Trade Centers, and more. Students complete 4 questions total.

In this space station worksheet, students read the article, answer true and false questions, complete synonym matching, complete phrase matching, complete a gap fill, answer short answer questions, answer discussion questions, write, and...

If your pupils think relative velocity is the velocity at which you can run away from your relatives, they need this simulation. Two bikers want to meet at a specific time. Scholars alter the velocity of one rider to arrange the...

A website all about planetary mysteries—it's a one-stop-shop for all things, stars, planets, and space travel. Scholars read an astronomy overview to discover the page's big ideas, then choose from the plethora of resources, including...

Scientists work every day to find solutions to genetic diseases. Scholars learn about the process of gene sequencing, mutations, and the results. They explore genetic diseases and therapies to intervene and help and, through case...

The brain is a complex organ with many different structures and functions. An interactive diagram allows learners to explore the different structures while pop-ups describe their functions. Secondary interactives show the structures of...

Take the first step into graphing sequences. Learners set the starting number, multiplier, add-on, and the number of steps for a sequence. Using the inputs, the interactive calculates and plots the sequence on the coordinate plane. Users...

Caesar ciphers hide secret missives. A simple interactive lets users encode and decode hidden messages. The cipher method here is the Caesar shift.