## Reflection: Staircase of Complexity Equations, Tables, and Graphs Day 1 - Section 4: Saving Money and Practice

Some of my students were struggling to generate an equation to match Carlos’ situation.  I chose to offer students a variety of equations.  On the board I wrote:

a)      y = 100 + x

b)      y = 50x + 100

c)       y = 100x

d)      y = 100x + 50

e)      y = 150x

Students worked in partners to determine which of these equations matched Carlos’ situation.  When we came back together, I asked students to identify one equation that did not match and explain why.  Students used the data in the table and graph to prove their ideas.  When a student mentioned (b), I declared that(b) did work since for the first month 50 x 1 + 100 = \$150.  I wanted students to tell me that even thought it worked for the first month, the equation did not work for the other months. I also did this for equation (e).   Then we talked about why (d) correctly modeled Carlos’ situation.  Students were engaging MP3: Construct viable arguments and critique the reasoning of others.

Choosing an Equation to Fit Carlos' Situation
Staircase of Complexity: Choosing an Equation to Fit Carlos' Situation

# Equations, Tables, and Graphs Day 1

Unit 6: Expressions, Equations, & Inequalities
Lesson 8 of 20

## Big Idea: What are independent and dependent variables? Students work on creating equations, tables, and graphs to represent various situations.

Print Lesson
18 teachers like this lesson
Standards:
Subject(s):
Math, Algebra, Expressions (Algebra), tables and graphs, dependent variable, independent variable, 6th grade, master teacher project, learn zillion, equation
50 minutes

### Andrea Palmer

##### Similar Lessons

###### Determining Solutions
Big Idea: How can we prove equality? In this lesson students determine if a given number is a solution to an equation. Skill mastery is a focus.
Favorites(10)
Resources(20)
New Haven, CT
Environment: Urban

###### Solving 1 Step Algebraic Equations
Big Idea: Students use algebra tiles to solve equations.
Favorites(4)
Resources(13)
Brooklyn, NY
Environment: Urban

###### One-Step Equations... How Do They Function?
6th Grade Math » One-Step Equations & Inequalities
Big Idea: What's Your Function? Understanding one-step algebraic equations as functions.
Favorites(1)
Resources(20)
Jonesboro, GA
Environment: Urban