Hold it in place or move it along. Screws do both jobs all day long.

something screwy going on

By Glen Phelan

Screw

Simple
Machines

Explorer magazine’s six‑part series

Simple Machines

Explorer magazine’s six‑part series

lever
inclined plane
Wedge
screw

This edition

wheel and axle
pulley

Human Journey

Physical Science

Engineers improve existing technologies. After you have completed the activity, think of ways to improve it.

Go to article: PathfinderGo to article: In This IssueGo to article: Extreme PlantsGo to article: Killer Seeds & The Sting Is the Thing - Extreme PlantsGo to article: Big Stink & The Need for Speed - Extreme PlantsGo to article: Giant Freeloader and Rising Giant - Extreme PlantsGo to article: Extreme Supreme - Extreme PlantsGo to article: Living With Lava DomesGo to article: An Explosive Start and a Place to Study - Living With Lava DomesGo to article: Inside an Eruption - Living With Lava DomesGo to article: In the Field and Routine MaintenanceGo to article: Looking at the Dangers and Spreading the WordGo to article: Simple Machines: Something Screwy Going OnGo to article: It's Simple and the Turn of the ScrewGo to article: It's All About Trade-Offs, Hold on Tight and Dig In - Something Screwy Going OnGo to article: Climb up, Slide Down and Move It AlongGo to article: Make Archimedes Proud - Something Screwy Going OnGo to article: Explorer ClassroomGo to article: The End