# Modeling Subtraction Algebraic Equations

### Let me know in the comments how this worked out for you!! Thanks for reading!!

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### 5 Responses to Modeling Subtraction Algebraic Equations

1. Jessica says:

So I’m guessing you teach integers before you teach equations. My problem is that I haven’t taught integers yet and when I do I won’t be teaching adding and subtracting them. Any ideas for that?

• Andrea Kerr says:

I would still teach them to solve subtraction equations by changing the subtraction sign to an addition sign and making the second number a negative. They should still be able to grasp the fact that a negative one and a positive one would make zero. That would be my suggestion. What grade to you teach? I know so many teachers just teach them to do the opposite operation, and that works when you don’t have integers. I always want them to understand the difference between a subtraction (operation) sign and a negative sign. It helps them so much when they start solving more complex equations. Thank you for your comment! Let me know what you decide. I would love to hear!

2. Stephanie Norton-McDonald says:

Your blog is seriously a life saver! I am a first year teacher in Nebraska and I look forward to receiving your emails regarding a new post! This year we have been doing mini lessons in solving equations in preparing for the state assessment. It has not been going well at all for me or my students. Next week we are starting the chapter in the book on solving equations and I am looking forward to incorporating everything you have to offer. Please keep up the good work! It is truly appreciated!!

Stephanie

• Andrea Kerr says: