In this activity, learners explore work, forces, simple machines, and construction. This lesson guide includes simple ways to demonstrate these principles as well as hands-on activities. For example, learners work together to make a bridge out of everyday objects and test its strength. This experience can prepare learners for a science field trip to the Construction Zone (exhibit) at The Children's Museum of Indianapolis, but a field trip is not necessary. This activity is featured on pp.30-31 (part of a lesson that begins on page 29) of the "ScienceWorks" K-2 unit of study.