This lesson will make your students realize that even though they take their heart for granted, the heart is working hard to pump blood to different parts of the body to keep them healthy and running!

Use this lesson to teach your students about the characteristics of mammals and birds. Teach them about unique mammals and birds that do not have the characteristics of the average mammal and bird.

Use this lesson to see how animals can have very interesting relationships. Some help each other, some benefit from others, and some hurt others. Young scientists are sure to benefit from this eye-opening lesson.