Science and Language Arts: Forces at Work Students explore how forces (such as gravity and inertia) act on machines.		Behold the Fork Interesting facts and fun activities related to the fork.
Science, Technology and Society: Total Artificial Heart Students learn about the artificial heart implant and how it is being used and tested on...		Helen Keller Interesting facts and fun activities related to Helen Keller.
Experiment Activity: Experimenting with Pulleys Students predict and then measure the effort needed to lift a bottle with pulleys. Materials...		Shopping Carts Interesting facts and fun activities related to shopping carts.
Machines We Use Students are given pictures of several simple machines, and then asked to draw other examples.		The Pen Is Mightier Interesting facts and fun activities related to the ballpoint pen.
What Do You Know About Tattoos? Interesting facts and fun activities related to tattoos and tattooing.		All About Celluloid Interesting facts and fun activities related to the discovery of celluloid.
All About the Stapler Interesting facts and fun activities related to staplers (a type of third-class levers).		All About the Typewriter Interesting facts and fun activities related to the typewriter.
All About Ballet Tutus Interesting facts and fun activities related to the history of the ballet tutu.		All About Pneumatic Tires Interesting facts and fun activities related to pneumatic tires.
All About Washing Machines Interesting facts and fun activities related to the history of washing machines.		Photographs in a Flash Interesting facts and fun activities related to the invention of the flashbulb.
All About Mailboxes Interesting facts and fun activities related to Anthony Trollope, inventor of the "pillar box"...		All About Rickshaws Interesting facts and fun activities related to rickshaws.
All About Zippers Interesting facts and fun activities related to the invention of the zipper.		All About Carbon Paper Interesting facts and fun activities related to carbon paper.