Are you struggling to make density “click” for your students? If so, bring science to life with this easy to prepare, hands on sink or float density experiment!
I was super nervous to implement this density lab in my rowdy middle school classes of all boys, but it turned out that a few manipulatives actually made them a lot calmer, engaged, and on task. Who knew what a few paperclips could do? I’d highly recommend this activity to anyone teaching weather, earth’s layers, or any other density related topic!
Using this investigation, students will examine 10 different items and make predictions about whether they will sink or float. Then, students will test the objects and make conclusions about the densities of the objects as they relate to the density of water.
Who is this resource for?
This resource can be used by classroom teachers, tutors, and parents of students in grades 6-9. Make sure you have enough time to prepare a few materials ahead of time, and be sure to check with your department to see what’s already available at your school!
Materials Required for this investigation:
- A container of water
- 10 small items (a list of suggested items is included)
- Student Sheet (in both printable PDF and digital Google Doc)
- Teacher tips
- Accompanying Presentation (Google Slides)
- Printable Procedures
- Answer key
Purchase includes a printable PDF file in color with answer key. On page 2 and 3 of this resource you will find a link to digital files. You will be able to copy these file and use it with Google Classroom or any other paperless initiative.
Please take a look at the preview file to see more of this resource.
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NGSS Standards covered by this Sink or Float Density Experiment: