Reflection: Connection to Prior Knowledge Temperature, Heat, Exothermic, and Endothermic Reactions - Section 2: Engage


Temperature, energy, and heat are topics that students have thought about their entire lives, so they often have misconceptions on these topics.  The goal of this engage piece is to get at students prior knowledge.

To do this I have students analyze a scenario which is based on the probe called "Objects and Temperature" that comes from Uncovering Students Ideas in Science (V1) (2005) by Kelley, P., Eberle, F. and Farrin, L.  This can be purchased in multiple places including the Uncovering student ideas website.

This probe asks students to predict the temperature of four objects left overnight.  They should determine that all four would have the same temperature, but many are confused about the difference between temperature  and heat.  Specifically some think that because they might feel differently when touched (because of their heat capacities) that they have different temperatures.  This idea will be explored in more detail when we learn about heat capacities in the next lesson.

I find that by spending the time to have students understand what they already think before the lesson that they are more likely to change their ideas during the lesson.

  Temperature Prior knowledge
  Connection to Prior Knowledge: Temperature Prior knowledge
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Temperature, Heat, Exothermic, and Endothermic Reactions

Unit 5: Unit 6: Energy
Lesson 2 of 9

Objective: Students will be able to differentiate between temperature and heat as well as exothermic and endothermic reactions through taking notes, performing lab activities, and drawing models.

Big Idea: Temperature is a measure of the average kinetic energy of molecules and can change as heat flows between objects. This change in heat for chemical reactions can be considered endothermic or exothermic.

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20 teachers like this lesson
Science, Chemistry, Heat Flow, temperature (Thermodynamics), Exothermic Reactions, heat, exothermic, endothermic, temperature, specific heat
  95 minutes
student initial model
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