Parallel circuits often provide less of a challenge for teens than parallel parking. An installment of a series on parallel electric circuits requires learners to solve increasingly difficult  levels of calculations. Each level...

Scholars demonstrate understanding of kinematic graphs through matching dot graphs to position time graphs, dot graphs to velocity graphs, and a mixture of the two. If users feel stuck or confused, a Help Me! button offers an explanation...

Pupils apply their understanding of motion to 11 practice problems as part of a series on dimensional kinematics. They view a dot diagram animation and read descriptions to identify which match. As a bonus, the interactive offers...

Do your young physicists get a little unbalanced when it comes to talking about torque? Scholars examine the effects of weight and distance on a balanced system with a simple interactive from the Rotation and Balance series. The resource...

Mortgage, insurance, car payments...how much money will your learners need to support their desired lifestyle? Part three in a six-part college and career readiness lesson plan series tasks young job seekers with creating a monthly...

Most pupils learn quickly how to apply Newton's Second Law equation to calculate net force. However, many struggle to determine net force before calculating the value of an unknown force from a force diagram. As part of a larger series...

Pupils read a description of a physical situation and select the free-body diagram that best matches. As part of a series on applying Newton's Laws of Motion, scholars reinforce their skills applying forces and considering their relative...

Scholars quantitatively apply their knowledge relating impulse, force, and time in the collision of objects. Three progressive levels challenge pupils with different ways of analyzing these problems. They identify multiple collision...

How do law enforcement officers determine the strength of an explosion based on the movement of objects around the point of origin? Scholars inspect the relative mass and velocities of two cars before and after an explosion. They perform...

Home is where your displacement is zero. Scholars practice solving distance versus displacement problems of increasing difficulty. They begin with two stage motion and, by the wizard level, each problem has four stage motion to consider....

From Pythagorean triples to the unit circle. Learners use the Pythagorean Theorem to find Pythagorean triples and then relate their work to the unit circle in a fun algebra project. Their discovery that x^2+y^2 is always equal to one on...

You've got mail! Budding business associates practice constructing messages to co-workers during the second of nine career education and skills lessons. Individuals drag and drop the components of emails to enhance their online...

Imagine a race to complete a puzzle where each person has the same 50 pieces, knows they are missing other pieces, and must figure out how everything fits together. The winner gets fame, listed in books for years to come, and a financial...

How did the aftermath of World War I lead to World War II? What was the connection between the Enlightenment and the French Revolution? Unpack these complex topics and more using a series of short-answer questions. The exam is perfect to...

How did the Renaissance change the politics and culture of Europe? What led to the rise of the welfare state? What did family life look like in Europe during the 1700s? Learners consider these historical questions using structured...

Why was the Scientific Revolution so significant? What led to Dutch prosperity during the 1600s? To what extent have employment patterns changed in France in the last 100 years? Young historians consider these questions and get solid...

How does psychology affect other parts of people's lives? Scholars consider scenarios such as how stress affects a musician's audition or to what extent is a person's eating behavior connected to neurology. Analyzing such questions from...

To what extent is hyperactivity related to sugary treats at a birthday party, and to what extent is it caused by other factors? What goes into a person's adjustment to a new home? Case studies explore questions like these and offer...

What conditions influence a student's performance on a high-stakes test? What is the mental health aftermath of a car accident? Case studies examine these and similar questions. Pupils also sharpen their test-taking skills as they work...

How have urban planners tried to attract people to cities? What can be done about booming birth rates in some parts of the world? How does a country's political structure affect the well being of its people? Scholars investigate these...

Indigenous languages are making a comeback in some parts of the world. People now see land use patterns in our cities' marketplaces. Why do these things happen? Queries from the 2007 AP exam in Human Geography unpack these complicated...

Human geography involves everything from why people build factories along the United States-Mexico border to how land-use patterns and demographics are related. So, how do test-takers put it all together? Focused questions from an AP...

Why do people leave their home countries and come to the United States? How has nationalism affected European nations politically and socially? The answers are complicated. Pupils explore the intricate dynamics using structured questions...

People aren't the only things moving—businesses do, too. Scholars examine what causes human migration and its effects as well as what factors go into a business's decision to relocate. They analyze the complex dynamics in human...