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	Science Ninjas: Big Trouble with Simple Machines Chapter 6 - Pulleys (Nathan Schreiber - Science Ninjas) View
	Science Ninjas: Big Trouble with Simple Machines Chapter 5 - Wheels part I (Nathan Schreiber - Science Ninjas) View
	Science Ninjas: Big Trouble with Simple Machines Chapter 4 - Screws part 2 (Nathan Schreiber - Science Ninjas) View
	Science Ninjas: Big Trouble with Simple Machines Chapter 3 - Levers (Nathan Schreiber - Science Ninjas) View
	Science Ninjas: Big Trouble with Simple Machines Chapter 1 - Force and Mechanical Advantage Defined (Nathan Schreiber - Science Ninjas) View
	Science...Lifts! (Canada South Science City) View
	Simple Machines Screw (Ms. Yvette) View
	Simple Machines 10 - Screws (Eric Anderson) View
	Simple Machines The Wedge (Anthony Hyman) View
	Screw Tutorial Video (Pre-Engineering Tutorials) View