Lesson Plan

Sink or Float?

Students use websites and an iPad app to learn about the concept of sinking and floating, and to document their investigation.
Laura M.
ESL Teacher and Building Chairperson
Central Boulevard Elementary School
Bethpage, NY
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My Grades K, 1, 2, 3, 4, 5
My Subjects English Language Arts, Math, Science, Social Studies

Students will be able to...

-formulate questions

-make predictions

-use domain specific vocabulary

-test their hypotheses

-write to record observations and conclusion

English Language Arts
substance properties
Grades K - 2
All Notes
Teacher Notes
Student Notes

1 Hook

BrainPOP Jr.
From $175

View the Brainpop Jr. video Sink or Float via SMART Board, laptop, or iPad app: http://www.brainpopjr.com/science/forces/sinkorfloat/preview.weml

The video explains the basic principles of sinking and floating.

Students complete a graphic organizer and define the words: sink, float, heavy, and light.

2 Direct Instruction

View and participate in the Sesame Stree interactive: http://downloads.cdn.sesame.org/ss/multi-bitrate/05200090013MP4/05200090013MP4_HD750K.mp4

Students view the Tubes Sink or Float video, make predictions, and test their hypotheses.

Materials needed:

  • plastic bin
  • water
  • paper towel tubes




3 Guided Practice

View and participate in the Sesame Stree interactive: http://www.youtube.com/watch?v=dy0S1Pv0eOE

Students interact with the video clips, make predictions, and test their hypotheses.

As students interact, the video provides feedback.

4 Independent Practice

Activity: Investigating

Students make predictions, test objects, record their observations and conclusions.

Students can work in partnerships, small groups, or individually.

Materials needed:

  • plastic container
  • water
  • pennies
  • paperclips
  • ping-pong balls
  • rocks
  • plastic spoons
  • feather

5 Wrap-Up

Book Creator

Students use the Book Creator if iPad app to take photos and videos of their experiment.

Students create a book incorporating images, video, and audio recordings as well as typed words to document their process and scientific investigation.