1. Analogies & Mystery Disk Lab

2. Create analogies describing the early models of the atom
Objectives
Today I will be able to:
Create analogies describing the early models of the atom
Explain how indirect measurement is involved in the experiments of Rutherford and Millikan.
Apply indirect measurement to formulate evidence about an experiment.
Informal assessment – monitoring group interactions as they complete the lab activity and answer the questions
Formal assessment – analyzing student responses to the questions
Common Core Connection
Reason abstractly and quantitatively
Use appropriate tools strategically

3. Lesson Sequence Evaluate: Warm Up Explain: Model of the Atom Analogies
Elaborate: Mystery Disc Lab
Evaluate: Exit Ticket

4. Warm - Up What was Rutherford’s Gold Foil Experiment?
What type of measurements did Rutherford use to obtain results in their experiment? Why?
Hint: (Direct Measurement or Indirect Measurement)
Gold Foil = Shot alpha particles at an atom and expected all to pass through (i.e plum pudding model) but some ricocheted and showed that there must be a center part to the atom
Oil Drop = Found the mass of an oil drop and gave them an electric charge. Applied a voltage to the drops and used a current (by x-rays) in the system to stop them from dropping straight down. This allowed him to calculate the charge and see that this charge was applied to the electron (found mass and charge of the electron)

5. Objective Today I will be able to:
Create analogies describing the early models of the atom
Explain how indirect measurement is involved in the experiments of Rutherford and Millikan.
Apply indirect measurement to formulate evidence about an experiment.

6. Homework
Atomic Structure Quiz Friday
Finish Lab Analysis Questions

7. Agenda Warm – Up History of the Atom Analogy Lab Introduction
Mystery Disk Lab
Exit Ticket

8. Analogies

9. Make an analogy
Work with your group to create a real-life analogy for the Dalton, Thomson, Bohr and Schrodinger Models of the atom
Look at Mr. Klotz’s example for guidance
We will share analogies with the class
10-15 minutes

10. Analogy: The Cell The Cell = A big busy city Nucleus = City Hall
Ribosome = Construction Site
Smooth/Rough ER = Road system
Cell Membrane = Border line
Mitochondria = Nuclear power plant

11. Mystery Disk Lab
Using inferences

12. Directions
Travel to the stations to determine what is on the inside of the mystery disk.
Do not rotate to the next station until Mr. Klotz gives directions to rotate
We will skip part B for today
When you finish, answer the questions for the lab
3-4 minutes for each mystery disc

13. Exit Ticket
What strategies did you use to make indirect measurements using the mystery disks?