Reflection: Adjustments to Practice Electrical Conductors - Section 5: Wrap Up


What I Learned After Reviewing the Exit Tickets: 

While checking and sorting exit tickets, I noticed a couple of things that stood out to me.  One thing was that many students had no clue how to connect the wires at the top of the page.  There were so many variations in how this was messed up, I could not believe it.  I think what threw so many students off, was having the items in a line instead of having them more circular.  If I had placed them in a circular pattern and had them connect them, I think the results would have been different.  

The circuit part was not the focus of the lesson, identifying the property of conductivity in matter was so I was less concerned about the top portion of the exit ticket, and more concerned with the results from the bottom.  I found that the students who were missing the question at the bottom, were all selected one of two items incorrectly, the marble or the rock.  We did have a discussion following the lesson about what items were good conductors and what items were poor conductors but marbles and rocks never came up.  We did mention glass, which is what marbles are made of, but I am not sure students make that connection.  Marbles are a common item found in most science classrooms so if I were to do this lesson over, I would add a marble to the bag of items for students to test. 

The rock was an answer that actually got me thinking, why did so many students choose this?  I know they studied rocks and minerals in 4th grade, so they do have some background knowledge on there properties.  I began thinking of all of the properties of rocks that I teach: luster, hardness, cleavage, streak...and magnetism.  This led me to the connection that some minerals, and therefore some rocks, do have metallic properties.  Maybe this was the connection that some students were making?  I do know that some are magnetic but I am not sure if they would conduct electricity so I looked it up online.  I actually found that some do indeed conduct electricity. There is a lesson titled Rocks, Minerals, and Electricity written for Utah Standards that goes through testing some of these minerals and identifies which minerals will conduct electricity and which ones will not.  I will definitely be adding a few of these minerals to the bag of items to be tested for next year!   

  Information Gathered from Exit Tickets
  Adjustments to Practice: Information Gathered from Exit Tickets
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Electrical Conductors

Unit 2: Matter and Its Interactions
Lesson 8 of 10

Objective: SWBAT classify items as electrical conductors or nonconductors

Big Idea: Students build circuits and then replace the switch with various items to test if they are good conductors of electricity.

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10 teachers like this lesson
Science, Electricity, conduction
  60 minutes
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