32 items
Making a Lens
Introduction Benjamin Franklin was a scientist and an inventor. As he got older, he noticed he needed glasses for reading and seeing things far away. Franklin solved this problem by inventing bifocals, which were glasses made with two...
Origins of the Teddy Bear
Overview The term "teddy bear," used to describe a stuffed toy bear, originated in 1902 during Theodore Roosevelt's presidency. By examining the political cartoons of Clifford K. Berryman, students will learn that the teddy bear is a...
Showing results 16 - 20