David and Chuck search for Tyco Bass and Prewytt Brumblydge, the only two people who know if the mysterious Brumblitron machine will destroy the world

For use in schools and libraries only. A mystery man inspires two boys to build a space ship which takes them to the planet of Basidium to help the Mushroom peo

Chuck, David, and Tyco Bass venture into unknown areas of the Mushroom Planet to search for information about some fossil bones.

On their second flight to the planet of Basidium, two boys find that they have a would-be scientist as a stowaway. Sequel to The wonderful flight to the Mushroo

The Sourcebook for Teaching Science is a unique, comprehensive resource designed to give middle and high school science teachers a wealth of information that wi