1. Framework for Teachable Tidbit Intersections of Biology and Physics Group Members: Amy, Erin, Jennifer, Joy, Kathleen, Stephanie, and Sierra (facilitator) Who? 25 biology majors What? Conceptual Physics course Where? Midway through course

2. Learning Goals and Intended Outcomes/Objectives Who? 25 biology majors What? Conceptual Physics course Learning Goal: Understand how a chemical battery works. Learning Objectives: 1.Identify key features of a battery. 2.Draw and label a battery and describe how it works. 3.Develop and explain an analogy of how a battery works to a concept in biology. 2

3. Assessment Summative Assessments For our tidbit Create a 3-D model of the analogy and explain how it works like a battery. Other possibilities Create a poster of your group’s analogy Exam Research paper Given specific materials, make a battery that will light up an LED‍ Research, design and create a battery out of new materials (no lemons or potatoes) Activities and Formative Assessments… 3

4. Questions from Reading Why does a battery need… 1) an anode? 2) a cathode? 3) an electrolyte? 4) a wire + bulb? 4

5. Think, Group, Share What would your life be like if you didn’t have batteries? 5

6. Complete the Puzzle Assemble 4 pieces Match labels and descriptions to each piece Draw arrow(s) indicating the flow of electrons Discuss separation of charge and potential 6 Objective: Identify key features of a battery.

7. AA Dry Cell Battery With your neighbor: Research a AA dry cell battery, a different form of a chemical battery Create a sketch on your whiteboard, labeling key features (& compare to puzzle) Compare your sketches with your group 7 Objective: Draw and label a battery and describe how it works.

8. Human Battery 8 The Matrix, 1999

9. Propose a Biological Analogy to a Battery In your group: Brainstorm possible analogies Select one for your final project Create a sketch on your whiteboard as a rough draft for your 3-D model Share 9 Objective: Develop and explain an analogy of how a battery works to a concept in biology.

10. Next Step: Final Project In your group: Create a 3-D model of the analogy you’ve proposed and explain how it works like a battery. 10 Objective: Develop and explain an analogy of how a battery works to a concept in biology.

11. Summative Assessments For our tidbit Create a 3-D model of the analogy and explain how it works like a battery. ‍ Other possibilities Create a poster of your group’s analogy Exam Research paper Given specific materials, make a battery that will light up an LED ‍ Research, design and create a battery out of new materials (no lemons or potatoes) 11

12. Batteries 12 Transform chemical energy into electrical energy Electrodes made of two different metals, immersed in an electrolyte solution (e.g., a dilute acid) Acid dissolves the zinc electrode; each zinc atom leaves 2 electrons behind & enters the electrolyte as a positive ion (zinc → negative) Electrolyte becomes positive; attracts electrons from carbon electrode (carbon → positive) End result: a potential difference between electrodes

13. Learning Goal Understand how a chemical battery works. 13

14. Learning Objectives 1.Identify key features (electrodes, electrolyte, separation of charge, connecting wire, etc.) of a battery. 2.Draw and label a battery and explain how it works. 3.Develop and explain an analogy of how a battery works to a concept in biology. 14