##
* *Reflection: Student Grouping
Creating your own Systems of Equations - Section 2: Application

Although in general, shy students feel more comfortable working in pairs, pairing these students up with outgoing and dominant classmates may not be a good thing. The shy or struggling student may fall into an overly passive role allowing the dominating student to “take over”. So, although I want to pair struggling students with more advanced ones in this activity, I think about how my students “tick”, and pair them up carefully as I hand each a pairing card.

Once students are paired I walk by each pair and give the group certain “suggestions” to avoid one student “taking over”. This could be a preliminary task like asking the shy student to do the writing, or telling the group that this student will be called on to explain a problem at the end of the activity. Another thing that must be done is helping these students’ self-confidence by saying things to the group as you walk by, which lets the more outgoing student know, that their partner has qualities that should be respected. I would say things like “You know Tom is usually very quiet, but he’s got a lot to contribute and knows what’s going on”, or “Don’t let Lisa’s silence during class fool ya, she is on target with everything”. I do try to be sincere about the comments, but always very positive.

In general, students in some way or another seek acceptance from peers, and working in small groups is an opportunity to achieve this, so providing an environment in which they can participate without fear of judgment or embarrassment is crucial.

*Pairing students up*

*Student Grouping: Pairing students up*

# Creating your own Systems of Equations

Lesson 10 of 13

## Objective: SWBAT create and solve systems of equations based on their own formulated real world circumstance

## Big Idea: Designing problems and applying learned skills in different real world contexts fosters higher order thinking.

*65 minutes*

#### Launch (Warm up)

*15 min*

The warm up exercises (Warmup Creating Systems) in this Launch section access students' prior knowledge and give me a good picture of student readiness for the activity. I already have a pretty good idea of those students that have struggled more than others throughout the unit.

Today, I want to pair these students up with those that have done well. At first, I tell students to complete the warm up individually. While they are working, I walk around monitoring and helping where necessary and I distribute one card piece (Pair up cards) to each student. The cards were cut out before class and they are ready to be handed to students during the warm up. I distribute the cards strategically so students who may have difficulty with the main activity, are paired with more advanced students to work together.

Once students are finished with the warm-up exercises, I review each question by calling on volunteers to share an answer.

* *

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#### Application

*35 min*

Once the warm up is done, I ask students to find their partner by finding the Pair up cards that matches their's. I then take the six Scenarios for creating a word problem and post them in separate areas around the room, preferably on whiteboard.

Before asking students to get to work, I project the Burgers image on the board in order to model what each pair of students in class is suppose to do during the activity. The image shows hamburgers and cheeseburgers. I leave the image up for a while and tell the class that I am going to think of a situation which lends itself to writing a system of two linear equations, in order to find the solution to my problem. I then project the model system of equations problem. I call on someone to read the word problem and then ask if they can write the two equations on the board for us. The desired equations are:

**b + c = 24**

**2.5b + 3c = 68**

I expect that all of my students will be able to solve this system at this point in the unit. If we're not pressed with time, I may ask the class to solve it and call on someone to write the solution on the board.

I then ask students to stand and go around with their partners, looking at the 6 scenarios posted around the room. I ask that they choose 4 out of the 6 scenarios and use their imagination to...

**Create a problem situation from the image****Write the two equations in the system****Solve the system by any method**

Some students may want to create their own situation, not a situation in any of the posts. I always allow students to create one of their own if they wish. I also vary the number of problems for students to solve if time runs out.

The students should do all their work on blank sheets of paper (see reflection), one set per group, indicating the scenarios chosen. In order to avoid chaos, I may ask students to choose the images they want to work with and work at their desks. Moving around is always a good idea to help student thinking. I'm flexible enough to allow some groups to sit and work on the floor if they want to. As the class is working, I walk around giving help and guidance, yet allowing each group to create and solve their own problem. Calculators always come in handy here because the values students choose will many times give decimal results when computing results.

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#### Closure

*15 min*

Once groups are done with creating their own word problems and solving their systems, I call on volunteers for each of the six scenarios posted, to write and solve their system under the corresponding image. Once all six systems are solved on the board, I call on each group and ask that they state their word problem to the whole class, guide us through the problem explaining what method they used and what the solution to their system equations means with respect to the problem situation.

I ask students to pose any questions after each presentation and allow some time for the students to respond to these. All students should hand in their work containing the four scenarios and solved systems, before leaving the class.

Student sample work (see *Successful Scenarios in the Lesson* reflection for more about how students worked on these tasks):

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The Creating Systems of Equations homework assignment involves some research so I ask that students choose one out of the two problem given. All work should be shown.

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- UNIT 1: Number Sense
- UNIT 2: Solving Linear Equations
- UNIT 3: Relationships between Quantities/Reasoning with Equations
- UNIT 4: Powers and Exponents
- UNIT 5: Congruence and Similarity
- UNIT 6: Systems of Linear Equations
- UNIT 7: Functions
- UNIT 8: Advanced Equations and Functions
- UNIT 9: The Pythagorean Theorem
- UNIT 10: Volumes of Cylinders, Cones, and Spheres
- UNIT 11: Bivariate Data

- LESSON 1: Sharing Equations (Day 1)
- LESSON 2: Sharing Equations (Day 2)
- LESSON 3: Catching Up
- LESSON 4: On Substitution (A continuation of "Catching Up")
- LESSON 5: Solving Systems by Addition
- LESSON 6: Elimination to Solving Systems (1)
- LESSON 7: Elimination to Solving Systems (2)
- LESSON 8: Systems and Parallel Lines
- LESSON 9: Counterfeit Coins
- LESSON 10: Creating your own Systems of Equations
- LESSON 11: Going Mobile?
- LESSON 12: Systems Assessment 1: Scavenger Hunt
- LESSON 13: Systems Assessment 2: Mastery Test