Reflection: Staircase of Complexity Household pHun! - Section 5: Closure


In this lesson, you will notice that many of the questions are at the bottom of Bloom's Taxonomy. As an introductory lesson, students are simply gaining initial vocabulary and knowledge that they can quickly comprehend and apply.  In this lesson, students are gaining a familiarity with common acids and bases and the structure that gives them their properties.  For a middle school student, these are complex ideas.  It is important to climb a "staircase of complexity" in teaching this concept.  

In future lessons, students will have to analyze what is occurring at the molecular level with acids, bases and the reactions that occur with them.  They will make inferences in how neutralization reactions occur and identify patterns that result in chemical reactions with relationship to acids and bases.  At this point, students are not ready for those levels of learning.  However, I felt that it was important to note that those levels are coming in my upcoming lessons.  In the next two lessons, students have to work through a series of more complex problems relating to this topic.

  Increasing Complexity With Each Lesson
  Staircase of Complexity: Increasing Complexity With Each Lesson
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Household pHun!

Unit 6: Chemical Properties and Reactions
Lesson 5 of 9

Objective: Students will be able to analyze the property of pH in common household substances.

Big Idea: The students get an introduction to pH and identify common substances as acids and bases using red cabbage juice. Students love the bright colors of this lab!

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23 teachers like this lesson
Science, Chemistry, Acids and Bases, acids, Chemical Reactions and Balancing, hydrogen ion, hydroxide ion, pH, bases, neutral, neutralization, physical change, reaction
  80 minutes
test tube lesson
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