Teach your students about different types of rocks and how they're formed, using objects that your class is familiar with.

Windmills have been around for generations to grind food and create energy. During this challenge, students will use various materials and put their engineering skills to work by creating their own windmills.

Show your class how combining two objects can create a new object in this hands-on science lesson. Students will learn why breaking apart an object doesn't change its mass.