Wednesday, January 9, 2013

You are my density...

We wrapped up our density studies this week with this "Dunk'n for Density" lab from  It is a great way to assess whether students not only understand the meaning of mass, volume and density, but it also requires students to apply their knowledge!  If you haven't already tried this in your classroom, you should check it out!  It is one of the best 6th grade level density labs that I have seen.  Kudos to the folks at for this easy to implement idea!
Here is an example of the canisters once they have been modified to float, sink and suspend.  

The kids really enjoy this lab, although we kinda took the fun out of it by making it a density unit test!  (It is the only test that I could find that required real application.)     Along with my awesome colleagues, we set up 28 lab stations (1 per student) as pictured below.  If it were not a test, kids certainly could have worked in groups and shared materials, but I'm a big fan of very small groups or individual work on labs when possible.  
Note: Students were asked to bring a dish towel to work on, because as the containers are taken in and out of the tub the tables get soaking wet.  (The brown paper towels the school provides, just couldn't hack it.)

Off to plan some activities for elements and the periodic table...  

Happy Teaching!

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