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78 records found. Displaying 73 - 96.
Going Ice Fishing: Lever vs. Screw
From the Series First Step Nonfiction — Simple Machines to the Rescue
Is it easier to move ice with a lever or a screw? Readers will see how a group of kids compares two simple machines and decides which one does a better job at moving the ice. This book… Read More →
Hauling a Pumpkin: Wheels and Axles vs. Lever
From the Series First Step Nonfiction — Simple Machines to the Rescue
Which works better to haul a pumpkin—a lever or wheels and axles? Readers will see how a group of kids compares two simple machines and decides which one does a better job at moving the… Read More →
Holding a Door Open: Wedge vs. Wheels and Axles
From the Series First Step Nonfiction — Simple Machines to the Rescue
Which makes it easier to lift a large toy—a wedge or wheels and axles? Readers will see how a group of kids compares two simple machines and decides which one does a better job at lifting the Read More →
Making a Salad: Wedge vs. Inclined Plane
From the Series First Step Nonfiction — Simple Machines to the Rescue
Is it easier to move heavy box with an inclined plane or wheels and axles? Readers will see how a group of kids compares two simple machines and decides which one does a better job at… Read More →
Playing a Game: Inclined Plane vs. Lever
From the Series First Step Nonfiction — Simple Machines to the Rescue
These kids are playing a game, trying to move a person with a simple machine. Which will work better—an inclined plane or a lever? Readers will see them compare the simple machines to decide. Read More →
Raising a Bag of Toys: Pulley vs. Inclined Plane
From the Series First Step Nonfiction — Simple Machines to the Rescue
Is it easier to lift a bag full of toys with an inclined plane or a pulley? Readers will see how a group of kids compares two simple machines and decides which one does a better job at… Read More →