FOSS Module Summary

Module Summary – Balance and Motion (2nd Ed.)


We live in a dynamic world where everything is in motion, or so it seems. But not everything is moving the same way. Some things move from one place to another. Other things go around and around in a rotational motion. Still other things are stationary, stable for a time, balanced on a thin line between stop and go. These are the global phenomena that students experience in this module, Balance and Motion.


  • Develop a curiosity and interest in the motion of objects.
  • Investigate materials constructively during free exploration and in a guided discovery mode.
  • Solve problems through trial and error.
  • Develop persistence in tackling a problem.
  • Explore concepts of balance, counterweight, and stability.
  • Observe systems that are unstable and modify them to reach equilibrium.
  • Discover different ways to produce rotational motion.
  • Construct and observe toys that spin.
  • Explore and describe some of the variables that influence the spinning of objects.
  • Observe and compare rolling systems with different-size wheels.
  • Explore and describe the motion of rolling spheres.
  • Acquire the vocabulary associated with balance and motion.

For a description of each investigation in the Balance and Motion Module and the correlations to the National Science Education Standards, download the Module Overview PDF.

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