Home » IHWH Slope-Intercept and Point Slope Form

IHWH Slope-Intercept and Point Slope Form

Necessity is the mother of invention today.  Last Thursday, my projector died.  State testing for my students is today and tomorrow.  (Some classes today…other classes tomorrow…)  It seemed like a good time for a sponge activity.

Enter my variation on the I have… Who has… game.IHWH Intro Equations

My game is a little bit different in that it does not make a loop with the entire class.  I like the idea of having them find their partners, and then doing eliminations each round.

Here’s how we play:

Each card shows an equation on the front, and a graph on the back.  The equation and graph do not match each other.  The goal is to find the person who has the graph of your equation and the equation to your graph.

I use the random picker from ClassTools.net with the whole class to decide who gets to speak first.

When a student’s name gets called, they have twooptions:

Easy Option:  Say, “My Equation says ______.  Who has the graph?” and hope that your partner can read their graph with enough confidence to raise their hand.

Hard Option:  Translate your graph and say, “My graph is of the Equation ______.  Who has that equation?”

Any student who thinks they have a match can raise their hand and be checked.  If nobody claims a match within a certain amount of time,  (I usually go 15-30 seconds) move on and spin the wheel again.

When two students are matched, I pull their names off the wheel and they are safe to go to the next round.  My classes are small (13-18 students), so the last two people remaining who didn’t find their partners are eliminated.  Their names are pulled off the wheel, and they have to wait for the next game.

To everyone else, cards are dealt again (minus one pair) and we continue eliminating until only 2 are left.  They are the winners, and usually get pencils or a novelty item.

It’s interesting to watch the strategy develop.  Students quickly learn that their peers are more shy and less likely to speak up about having a match if they have to translate a graph.  So the students who really want to win will start translating their graphs.

I’ve included Slope-Intercept and Point-Slope Form.  Notice that the answer keys are the same for both games.  This is because I made Slope-Intercept first and then did a healthy amount of deleting intercepts and rewriting equations.

My templates can be sent directly to a copier or any duplex printer.  Just make sure that you specify to the printer to flip on the long side.  I recommend laminating the cards, hole punching them, and putting a binder ring through the corner.  It was my first time doing this.  I like it.  I think it looks cool.  It makes me feel pro.

IHWH: Slope-Intercept Form

IHWH: Point-Slope Form

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