Reflection: Positive Reinforcement Lewis Dot Diagrams - Section 1: Background


One of the struggles I face in an urban, low-income environment is a lack of role models in the sciences.  To address this, I celebrate both Hispanic Heritage Month and Black History Month with research papers on notable scientists of color.  For Hispanic Hertiage Month, I utilize the Society for Advancement of Hispanics/Chicanos and Native Americans in Science (SACNAS) webpage, which has biographies of society members written at high and middle school levels.

I require students to use a minimum of five sources, of which the SACNAS project can be one.  As students extend their research, they often come across the emails of the scientists, many of whom are still researching and teaching.  I help students to craft polite, email inquiries to ask the person about gaps in their research.  Each year, two to three students get responses, and this gets them very excited.

I always follow up with the scientists who respond, to thank them for taking the time to communicate with my students.  Together, it is a fruitful partnership that starts to build some confidence in my students that people can come from their same circumstances and be very successful.

  Celebrating Diversity
  Positive Reinforcement: Celebrating Diversity
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Lewis Dot Diagrams

Unit 2: Periodic Trends and Bonding
Lesson 10 of 13

Objective: SWBAT use the periodic table to create Lewis dot diagrams of neutral atoms, and then to use those diagrams to predict ionic charges of elements.

Big Idea: Elemental behavior, and therefore placement on the periodic table, is dependent on patterns of valence electrons.

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4 teachers like this lesson
Science, Chemistry, Bohr Model, electrons (Bonding), periodic table, bonding
  42 minutes
lewis dots
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