Who tried again and again to improve his design for a super-powerful water blaster? Lonnie Johnson After years of tinkering with things and figuring out how they worked, he got the idea for a new toy. He made many models to show that his idea would work. Lonnie never gave up, and he became the inventor of the Super Soaker, a toy loved by kids around the world. Features include audio, author/illustrator biography, comprehension questions, educational...