By checking out this old photograph of a baseball player, kids will start to see that just about everything on earth changes with time.

Ever wondered how bubble gum got its start? Give your child practice reading a time line with this worksheet all about the humble beginnings of bubble gum.

Did you know hoops were used by the ancient Greeks? Learn more with this worksheet that offers a glimpse into the history and evolution of the modern hula hoop.

Children practice differentiating between past and present in this Venn diagram sorting activity.

Children read the First Amendment, then complete a simple word scramble puzzle and answer reading comprehension questions.