The Galle crater on Mars is also known as the Happy Face crater because of its appearance. First, scholars use pebbles and flour to simulate craters and study their properties. They then apply this knowledge to help decipher the history...

Students distinguish between the privileges of being a U.S. Citizen and privileges that are forfeited if not a U.S. Citizen.  For this history lesson, students analyze the rights of people in a democratic society through research,...

The process of nominating and confirming federal judges can sound like a lot of bureaucratic hoops, but a resource breaks down the steps of the Supreme Court nominations in a simpler manner. Learners participate in four activities that...