Reflection: Intervention and Extension Atoms vs Ions - Section 5: Individual Work Time


This lesson prompted one of the most direct outbursts I've received from a student in a long time.  This young lady asked for help, and noticed she hadn't made any of the Bohr models of the neutral atoms.  When I asked about it, she exploded at me that "Pictures don't help me!".  Recognizing both her frustration but desire to figure it out, I asked her how we could know the number of valence electrons without the pictures.

She thought for a minute and said "The group numbers right?"  So we adapted the exercise on the fly, having her write the number of valence electrons above the atom's name, and then whether it would gain or lose over the ion name.  From that, she was able to determine the type of ion formed, the total electrons, and the ion symbol.

This was a powerful reminder for me as a teacher.  Although 60+% of my learners identify as visual learners, not all need the constant scaffolding.  Indeed, I would have rankled as a student being asked to draw all the neutral Bohr models.  For next year, I am going to have this activity differentiated three ways:

  1. As is, where students need to use the periodic table to figure out and draw the Bohr models for the neutral atoms
  2. Slightly scaffolded, where the particle information is given for the neutral atom, but the diagrams need to be drawn.
  3. Most scaffolded, where the neutral atom drawing and particle information is fully given.

I will decide which student receives which model based on the Periodic Table and Particles quiz.  I will then have the students who finish fast and are more advanced become my student experts to help those who are still struggling.

  Mister! Drawings don't help me!
  Intervention and Extension: Mister! Drawings don't help me!
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Atoms vs Ions

Unit 2: Periodic Trends and Bonding
Lesson 8 of 13

Objective: SWBAT apply the octet rule to determine if an element will lose or gain electrons, and how many, when becoming an ion.

Big Idea: Use pictorial models to recognize patterns in the organization of the periodic table and behavior of elements and their electrons.

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6 teachers like this lesson
Science, Chemistry, Bohr Model, electrons (Bonding), periodic table, bonding
  50 minutes
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