Margaret Knight was only ___________ years old when she started inventing things.

________________ is responsible for inventing a new way to care for African American women’s hair.

Which of the following people might you think of when you think of when you eat a peanut butter sandwich?

Who can we thank for the way we communicate with people today?

Which of the following people is responsible for changing the way we travel? They invented the first airplane.

Benjamin Franklin invented ____________________ , which are responsible for helping people see.

______________________ is best known for inventing the light bulb and film projector.

___________________ proved that yellow fever was carried by mosquitos.