Roller coasters are thrilling amusement rides found in theme parks around the world. They consist of a train of cars that run on a track, featuring a combination of ups, downs, and loops. With various launch mechanisms and safety systems...

Andy and his class are going for a field trip to Geometry town. The teacher gave them an interesting task, they should look all around geometry town, and try to figure out the different geometrical shapes they’ve seen and learned at school.

This is a video about the anatomy of the heart, where the teacher takes the viewer on a journey through the heart's valves and strings using a real heart and a Magic School Bus simulation. The video explains the function of the heart's...

In this lesson you will learn how to ensure pronoun-antecedent agreement by making sure they agree in gender and number.