Anna Meyer MAINE EAST HIGH SCHOOL, PARK RIDGE, IL
High School Physics : Unit #8 - Finals Review : Lesson #2

# Physics Review: Inner/Outer Circle Activity

Objective: Students will be able to choose the correct equation to solve problems from various units throughout the semester.
Standards: SL.9-10.1 HS-PS2-1 HS-PS2-4 HS-PS3-1 HS-PS4-1 SP5 SP6
Subject(s): Science
60 minutes
1 Energy Conservation Practice Problem - 10 minutes

The goal of this lesson is to help students to review the computational, problem-based aspects of the semester. Students practice many different types of calculations from various units and decide what equation is appropriate for each problem based on what unit it comes from. This is a true test of their computational thinking (SP5) as they complete the problems and really have decide what equations are appropriate for the problem they are currently working on.

To start out class, I give students another practice problem similar to the previous class, as shown in the image below. I choose this energy conservation problem because it is among the list of concepts that students told me that they wanted to practice before the final exam. The problem combines many aspects of the energy unit including topics of qualitative conservation of energy (bar charts) and quantitative conservation of energy (finding elastic energy and velocity). This relates to the energy unit that students learned about previously and relates directly to HS-PS4-1 and HS-PS4-3.

I give students about 5 minutes to work on this individually and then I go over it as a class. I ask students to volunteer for each part and make sure to call on a different student for each part to get many students involved in this review. As I go over this problem, I emphasize that finding elastic energy is similar to how we found kinetic energy in the roller coaster problems; I just asked for something a little different this time. Finally, I make sure students recognize that the total energy equals the potential energy at the highest point and the kinetic energy at the lowest point.

2 Physics Final Inner/Outer Circle Review Activity - 50 minutes

After students have finished the practice problem. I tell students we are going to complete an Final Inner/Outer Circle Review and have students explain what they do throughout the activity. Each student receives a card with a problem on it that also has the answer on the back. Each student then solves the problem and checks his or her answer to the answer on the back. Since the answers are on the back I expect my students to show all of their work.

Before I pass out the problem cards, I pass out a blank sheet of paper to each student. I ask them to fold it in half, the "hot dog" way. Then I ask them to unfold it and fold it twice the "hamburger" way so that when unfolded there are 8 boxes, as shown below:

Then I ask them to put their name in 1 box. After their papers are folded, I pass out a problem to each student. The problems are labeled as numbers and letters that help to organize students later in the activity. There are easy, medium and hard questions randomly throughout the lettered and numbered problem cards. I make sure to give each student a problem that is the appropriate level of difficulty based on how they have been doing in class.

Once each student has a problem I tell the students where to sit. I have A and 1 sit at the same table across from each other. Similarly, I have B and 2, C and 3, etc. sit across from each other. When all students are sitting across from their partner, I tell them that each pair has a similar problem in which they use the same equation. Each student needs to complete his or her own problem, but if he or she needs help or gets the wrong answer he or she can ask the partner to help. I give pairs 2.5 minutes to complete their own problem. Then I remind them that they are now experts on their problem and carry their problem with them throughout the activity. I also make sure that they take their Final Equation Card with them that has all of the equations from all of the units that they need.