Challenges kids to use problem solving and critical thinking to design, build, and test model structures, games, and vehicles.What do you like about using it? The microwave oven was invented when an engineer made a mistake. Percy Spencer was carrying a candy bar in his pants pocket while working in his lab. He was conducting experiments on a new type of anbsp;...
|Title||:||Young Inventors at Work!|
|Publisher||:||Good Year Books - 1999-01-01|