Fossils are bones of things that have been long dead. Experts hunt for these fossils, dig them up, study them, and then learn some more about that particular thing such as how it lived, what it looked like, and when it lived. Show your kids the picture in this worksheet and point out the fossils there. In each triangle, there are 3 numbers; two of these numbers when added make 16. Then, help them count the bones and draw a line between the numbers that make 16.