Reflection: Checks for Understanding Modeling Systems of Equations - Section 1: Warm up and Homework Check

There is nothing better than seeing success in your students.  I would say over 90% of my students successfully evaluated this warm up problem.  Distribution of negatives is a systemic problem through all levels of algebra instruction so it was the main goal of this warm up.  I was pleased as I walked around and saw my students at all levels identify this issue and explain it.  The real differences came in the explanation.  Interestingly enough, this wasn’t associated with academic level.  Here is an example of Student Work where two students of the same academic ability have very different qualities of explanation.  There are several solutions to the problem of producing quality explanations.  One is the partner check.  When students check each other’s work, the quality and effort increase naturally.  Second, modeling appropriate explanations gives students an opportunity to view the expectations.  Finally, work can be returned with the requirement that further explanation is added to receive credit.  This is an important skill to grow as the Common Core assessments, the SBAC and the PARCC, require student explanation.  In the years to come, this is going to become an increasingly pressing issue as the tests become mandatory and affect student graduation and school ratings.

Checks for Understanding: Success

Modeling Systems of Equations

Unit 2: Modeling with Functions
Lesson 9 of 24

Big Idea: Turn the tables and have the students become the experts in this modeling systems of equations supporting Common Core transition lesson.

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Subject(s):
Math, Systems of Equations and Inequalities, Algebra, Algebra 1, Algebra 2, master teacher project
50 minutes

Amelia Jamison

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