|Define the criteria and constraints of a design problem with sufficient precision to ensure a successful solution, taking into account relevant scientific principles and potential impacts on people and the natural environment that may limit possible solutions.
|Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem.
|Analyze data from tests to determine similarities and differences among several design solutions to identify the best characteristics of each that can be combined into a new solution to better meet the criteria for success.
|Develop a model to generate data for iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved.
Objective: Students will examine the different components of batteries and the chemical reaction that takes place in a battery. Students will construct a battery using lemons in order to further understand the necessary components.
Lesson Introduction: The Voltaic Pile (~15-20 minutes)
- Students will complete the reading on Section #1 about the Voltaic Pile, in order to understand the components of batteries and how electrons flow through them as part of a complete circuit.
- Have students complete Quiz #1 questions
- Students will read Section #2 called “Chemistry of a Battery and “Intro to Chemical Reactions in a Battery”
- Students will read the section “What Happens Inside a Battery? Even More on Chemical Reactions” and the watch the “Be A Battery” video clip.
- Student will complete Quiz #2
Lab: Lemon Battery (~30 minutes)
- Students will follow along with the video clip and/or the written instructions to conduct the lemon battery experiment.
Post Activity Quiz Questions (~5-10 minutes)
- After students have successfully created their lemon battery, answer the reflection questions (Quiz #3)
Student Learning Goal:
- By the end of the lesson, students should be able to name the three major elements of a battery, the direction of electron flow, the oxidation-reduction reaction, and be able to build and explain the parts of their lemon battery.