James Dunseith NORTH HIGH, WORCESTER, MA
Algebra I : Unit #11 - Functions and Modeling : Lesson #3

Checking Your Models and Delta Math of Your Choice

Objective: SWBAT choose what they want to practice and develop mastery of the learning targets of their choice.
Standards: HSA-SSE.A.1 HSA-SSE.B.3b HSA-CED.A.1 HSA-REI.C.6 HSS-ID.A.2
Subject(s): Math
60 minutes
1 Opener Desmos Graphs Available - 10 minutes

Today's class is in the computer lab.  As students arrive I tell them that it's a work period, and that there are Delta Math assignments available for five different Student Learning Targets.  Anyone who wants to can get started on the Delta Math right away.  

"There's one thing you might want to see first," I say, "especially if you need a little help finishing the Interpretation Questions for the Class of 2017 Fundraiser."  I'm referring to yesterday's work, in which students had to write a linear function and quadratic function to model a fundraising situation. 

I provide links to two graphs on Delta Math.  Watch this video to see how students use these graphs.  Here is a link to the first graph, which plots y=n(x), and here is a link to the second, which plots y=R(x).

I give students as much time as they'd like to play with the graphs, to manipulate and see how close they can get.  If they're totally frustrated, I'll reveal the solutions, but usually I don't have to do that.  Some students ignore these graphs completely and just straight into a Delta Math assignment, and that's fine too.

2 Delta Math: Assignments Are Ready to Go - 33 minutes

For most of today's class (and one day in each of the next two weeks), students will work on the assignment of their choice on Delta Math.  I created these assignments based on the work requests I've received from students (see the first lesson of this unit for a description of work requests).

For today, there are assignments for five Student Learning Targets:

Check out this narrative video for an overview of what these assignments looks like and how I use them.  If you've never used Delta Math before, I recommend taking a look.  It's not the only tool of its kind, but it's simple, to the point, and it was created by a high school math teacher who wanted to make his job easier.  He's still in the classroom.  I share a brief suggestion for how to get started exploring the site in this video.