imple machines help us change the amount of force or the direction of the force needed to move an object. Find out how by learning more about levers. Major Funding by the Laura Moore Cunningham ...

Splitting logs, building canoes, and "uplifting" wedges! Splitting logs, building canoes, and “uplifting” wedges! From axes to canoes to the forks we eat with, the Curious Crew gets a “cutting edge” ...

Lesson that teaches children what screws are and what they do. Gain a deeper understanding of what screws are by making your own in this interactive lesson. Usage conditions apply ...