Reflection: Developing a Conceptual Understanding Common Groups of Elements - Section 5: Find Your Family


As students are sorting themselves into proper families, some had trouble picking out the right family for their individual element.  One example was that some students who had Alkali Metal elements and Alkaline Earth Metal elements were trying to form one family together.  There were other Alkali Metal elements who had already determined that they belonged together as a single family, and a few Alkaline Earth Metal elements making their own family as well.  I asked the students who were making a "combined" family group to really look at the properties listed on the bottom, and to see if there was possibly a group that consisted only of those properties that they could join as a family.  Once those students moved beyond thinking that all metals must be in one family together, and started to think of families as being even more specialized, they were able to re-sort themselves properly.

In the future, I might give students a total number of different families that we would expect to have at the end so that students have a better feel for approximately how many small family groups they will be forming.

  Wrong Family?!
  Developing a Conceptual Understanding: Wrong Family?!
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Common Groups of Elements

Unit 1: Atomic Structure & the Periodic Table
Lesson 5 of 6

Objective: SWBAT compare and contrast properties of elements to better understand periodic table groupings.

Big Idea: The periodic table is organized in such a way that we can infer properties of elements based on their positions.

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