Reflection: Student Ownership Day 1: Ionic Compound Formulas - Section 4: Partner Activity

 

One thing I struggled with early in my career is deciding how much preparation I should do versus how much I should leave for my students to do.  For example, this activity uses paper cut-outs to represent charges on the cations and anions.  I could have cut the charge cut-outs myself, or even made semi-permanent manipulatives using cardstock that could be reused.  

I chose to have students do the cutting because, honestly, I just didn't have the time to do it myself.  I came up with the solution of using the charge cut-outs after school one day and wanted to implement using them the next.

I chose NOT to make them on cardstock for reuse because I wanted my students to actually have a useful set of their own to take home for extra practice.  The partners divided the charges up between them so that they each had half of the positive and negative charges to take home.  Regular paper worked just fine for that.  Had it been available, I could have printed the anions and cations on different colors of paper.

Taking part in the preparation of the charged cut-outs also build in student ownership of the activity.  Students chatted in their pairs while they cut, and were ready to focus on the task once the cutting was done.  

  Teacher Prep vs. Student Prep
  Student Ownership: Teacher Prep vs. Student Prep
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Day 1: Ionic Compound Formulas

Unit 2: Electron Configuration & Bonding
Lesson 5 of 9

Objective: SWBAT determine molecular formulas for ionic compounds using a periodic table and a list of polyatomic ions.

Big Idea: Ionic compounds have an overall neutral charge which determines their molecular formulas.

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