The Buoyancy Challenge!

Check out a lesson plan that starts with force of gravity and moves through the concepts of mass, weight, volume, and density. Learners calculate density, test the buoyancy of objects, and then demonstrate understanding by altering the buoyancy of objects by changing the object or the solution in which it is immersed. 

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CCSS: Adaptable
NGSS: Adaptable
Instructional Ideas

  • You may want to use just a portion of the lesson plan, teaching pupils about mass, density and volume with the inquiry-based lab, foregoing the worksheet on force of gravity
  • After the activity, you could use online videos showing surprising objects for the class to predict whether they will float
Classroom Considerations

  • Lesson requires classroom, laboratory space, and computers, so it could be a natural way to break up the different days if sharing laboratory space or computers among classrooms

  • Class/pairs/individual groupings help increase engagement and keep learners on task
  • Provides all necessary worksheets and assessment tools

  • Force of gravity between objects is not an essential concept for this lesson
  • Does not provide all the resources; the link does not work for a worksheet and buoyancy workbook


Common Core