LONG RANGE WATER BALLOON LAUNCHER: Makes a Big Splash with ... This slingshots for adults can also be used for science experiments, festivals, science fairs, etc. GIANT PACKAGE: 1 Heavy Duty ...

Advice from an English teacher in Massachusetts for guiding teenagers to think critically but not cynically about the information they consume. By David Nurenberg This collection of interactive ...

critical as the world becomes increasingly reliant on satellite-based devices such as GPS units in everyday life. The experiment features one four-stage rocket and two two-stage rockets.