Will It Sink or Will It Float?

Giant boats float while blueberries sink, but why? Scholars learn the importance of density in this lesson. They work together to map their ideas, learn more about the topic, and adjust their knowledge maps. Then they complete a hands-on activity and create graphs of their data, which helps them correct any misconceptions still present in their knowledge diagrams.


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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Prepare more items than you think you need for the guided practice, small group work, and evaluation portions so that answers are unique
Classroom Considerations
  • Assumes prior knowledge of density, calculating density, graphing, and slope
  • Includes an option for completing the activity without graphing for struggling pupils


  • Takes an experiment performed many times in elementary school up a level
  • Integrates science and math concepts
  • None