Discover the science behind an ages-old 4th of July tradition with this firework diagram.

In 2012, an 80 million-year-old dinosaur was discovered, and you can learn all about this 20-foot, 2-ton horned herbivore.

How can you tell how old a tree is? Look no further! This worksheet gives a basic overview of tree rings for your little scientist.

Did you know there is a tortoise who is over 100 years old? Learn some interesting animal facts with this cut and paste matching activity!

Grandma and grandpa didn't always have gray hair. Find out about what gives our hair color and what makes our hair lose that color as we get older.

Help kids understand the size and scope of billions of years with this helpful reference worksheet.

During the Gold Rush, people weren't sure if they found gold or something else, and these easy steps would help them be sure.