# Uniform Acceleration Calculations, Day #2

## Objective

Students will be able to use mathematical models (equations) developed from position vs. time and velocity vs. time graphs to solve problems.

#### Big Idea

Students explain how to use the uniform accelerated mathematical model by completing and presenting problems to the class.

## Second Look at Learning Targets

5 minutes

The goal of this lesson is for students to solve problems using the mathematical models for uniform acceleration that they developed from graphical representations of accelerated motion. They also should be able to explain their thought process in solving these types of problems. I want students to have more practice with the models since we just developed them in the previous lesson. Students will be working with the models and completing problems using computational thinking throughout the worksheet and whiteboard discussion.

To start class, since the unit is about halfway complete and students have a quiz tomorrow, I ask students to take out and have a second look at their learning targets. I have them to look at the Unit 2 Learning Targets to prompt them to think about what will be on the quiz. I have students rate themselves on a scale of 1-4. I want students to recognize that the targets that they rate themselves the lowest on are the ones they should focus their study efforts on. In addition, this opportunity provides time for students to check to see what questions they still have before the quiz.

## Worksheet #3 Work Time

20 minutes

After students take a second look at the learning targets, I ask them to spend about 15-20 minutes finishing up the problems on Worksheet #3 Uniform Acceleration Calculations that they started in the previous lesson. They should have finished through #3 for homework. I ask students to compare their answers for #1-3 with their group so that they know that they are properly applying and using the formulas. This is important for my students to see some success or to catch mistakes before they finish the worksheet.

When they are done discussing, 4 additional problems remain. As students are working to complete the worksheet, I walk around to make sure students are on track. I also observe any trends in mistakes that students are making. When I walk around, I carry WS #3 KEY to make sure the students are on track. The only questions I do not answer during this time are questions such "Am I right?" or "Does this look right to you?" I want them to ask their group members first and have them determine if they are correct or not during the whiteboard session instead of me telling them they are right or wrong. It is important that students check with each other as they are going along so that they can catch and mistakes that their group members make along the way and have a discussion about which way is correct and why.

## Whiteboard Prep Time

10 minutes

After students have completed the worksheet, I ask them to come sign up for the problem they would like to present to the class. To do this, I put a list of problem numbers on the board and allow a table to sign up when all members have the entire worksheet completed. After students have chosen which number they will be whiteboarding, I remind them that they need to show all work. This includes the mathematical model they used and their answer with units. I also tell them that two people from each group need to speak when they present their answer. The other members will write the problem on the whiteboard. I give the groups 7-8 minutes to prepare for their presentations.

25 minutes