Reflection: Rigor Subatomic Particles and Isotopes - Section 5: Elaborate


PhET simulations are a great resource to use in chemistry.  They are interactive simulations put out through the University of Colorado Bolder. 

On the website there are many simulations available for various subjects and grade levels.  For most of the simulations teachers have submitted worksheets which are great resources to help students understand the concepts presented in the programs.

I use the simulations several times throughout the year to give students a chance to better understand concepts.  I find that these simulations are especially helpful because they allow for differentiation where more advanced students can "play" and get into more complex tasks; whereas lower level students can stick to basic steps to visualize the concepts.

  PhET computer simulations
  Rigor: PhET computer simulations
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Subatomic Particles and Isotopes

Unit 2: Unit 2: Matter, Atoms, and the Periodic Table
Lesson 5 of 11

Objective: Students will be able to determine the number of protons, neutrons, and electrons in an atom, explain what an isotopes is, and calculate average mass.

Big Idea: Atoms are composed of subatomic particles; the number of these particles determines an atom's identity and mass.

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carbon isotopes1
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