The Linear Motor Invention Kit

If the armature of a solenoid is replaced with a magnet, the magnetic can be moved in both directions by reversing the direction of the current. Reversing the direction of the current reverses the north and south poles of the electromagnet. This, in turn, moves the permanent magnet back and forth in the tube of the solenoid to create a motor. Because the magnet moves back and forth in a straight line, it is called a linear motor. A rotary motor that moves in a circle will be introduced in a later invention kit.

Teacher Guide

The teacher guide contains lesson plans for each kit and activity. In addition, materials, sourcing, tools, and CAD files for fabricating the kits are also included.

Go to Teacher Guide

Unit Sequence

Activities Essential Questions
Lab: Exploring Magnetism What are the properties of magnetism?
Lab: Investigating Conductivity What are the properties of electricity?
Make: Building a Continuity Tester
Lab: Detecting Magnetic Fields What is the relationship between electricity and magnetism?
Lab: Exploring Electromagnetism What are the properties of an electromagnet?
Make: Building a Solenoid
Lab: Investigating Solenoids what are the realtionships between solenoids and modern-day inventions?

Key Concepts & Skills


  • Magnetism
  • Conductivity
  • Electricity
  • Electromagnetism


  • Computer-Aided Design (CAD)
  • Computer-Aided Manufacturing (CAM)
  • Soldering
  • Scientific Observations
  • Journaling