Reflection: Connection to Prior Knowledge Subatomic Particles and Isotopes - Section 1: Introduction


This is a lesson which I always have a range of student prior knowledge. 

The periodic table and basics of the atom are part of the middle school curriculum but students' come to my class with mixed knowledge.  Part of this is missing this in middle school (that they came to this country after middle school) or being absent on days where teacher covered this material, or simply not remembering the content. 

This year when I surveyed the class if they remembered how to figure out the number of protons, neutrons, and electrons I had many students who did not know the subatomic particles and how to calculate the number of each.  Therefore, before delving into the more complicated concept of isotopes I make sure to spend time reviewing in detail how to determine the number of each subatomic particle with the periodic table.  Furthermore, I made sure to have activities for students to practice with their partners to make sure that all students understood how to calculate the number of each particle and where they are located in the atom.  

Because of the mixed knowledge I choose to aim for 100% mastery of Bohr models and calculation of protons, neutrons, and electrons; but do not expect all students to be able to calculate weighted averages.

  Atoms and Subatomic Particles
  Connection to Prior Knowledge: Atoms and Subatomic Particles
Loading resource...

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.

  Print Lesson
21 teachers like this lesson
carbon isotopes1
Similar Lessons
Magnetism and Complex Text
High School Chemistry » Chemical and Physical Properties
Big Idea: Magnetism is a physical property that can be used to study how something is made.
Springfield, MA
Environment: Urban
Keith  Wright
Common Groups of Elements
High School Chemistry » Atomic Structure & the Periodic Table
Big Idea: The periodic table is organized in such a way that we can infer properties of elements based on their positions.
Los Angeles, CA
Environment: Urban
Emilie Hill
Modeling the Atomic Structure
High School Chemistry » Unit 1-The Atom
Big Idea: Students model the structure of an atom using an guided inquiry investigation.
Palos Heights, IL
Environment: Suburban
Eric Girard
Something went wrong. See details for more info
Nothing to upload