• About
  • Mini-Courses ▼

    Rhetoric for Kids

    • ASL for Kids – ABC Signs
    • MathLibs™ – Free for Over 2 Decades!
    • Art for Kids – Elements of Design
    • Art for Kids – Principles of Design
    • Rhetoric for Kids
    • Fitness Songs for Kids + Positive Music
  • Grab+Go Activities ▼

    Sign Language For Kids

    • View All Lessons + Activities
    • Taking it Offline
    • Sign Language for Kids
    • Art for Kids: Fun Art Projects
    • Fun Math
    • Fun Science
    • Rhetoric
    • Creative Writing
    • Wellness for Kids
    • Coloring Sheets
  • MathLibs™
  • ASL Resources
  • Wellness
  • Shop
  • Contact
  • About
  • Mini-Courses ▼
    • ASL for Kids – ABC Signs
    • MathLibs™ – Free for Over 2 Decades!
    • Art for Kids – Elements of Design
    • Art for Kids – Principles of Design
    • Rhetoric for Kids
    • Fitness Songs for Kids + Positive Music
  • Grab+Go Activities ▼
    • View All Lessons + Activities
    • Taking it Offline
    • Sign Language for Kids
    • Art for Kids: Fun Art Projects
    • Fun Math
    • Fun Science
    • Rhetoric
    • Creative Writing
    • Wellness for Kids
    • Coloring Sheets
  • MathLibs™
  • ASL Resources
  • Wellness
  • Shop
  • Contact
Previous Next

Substitution Method for Systems of Equations: aka “the blob”

Posted by: All Things Algebra

I love teaching systems of equations, like seriously LOVE it!  I always teach it right after the linear equations unit, and it’s the perfect transition from graphing one line, to graphing two.   Students catch on right away and think, “this unit is going to be easy!”

Then…. we hit Day 2:  Substitution.  Their little hearts sink.  I hear “Why does this seem so hard?”, and  “I remember solving equations in the fall, but not like this!”, and “Can’t we just solve it by graphing?”  This seemed to be a struggle every year.  That ended the year I introduced it as “the blob” method.  Sometimes students just need something fun to remember a certain method.  Something that always makes them giggle 🙂

These are the steps I have my students follow:
Blob Method for Substitution
If they get an equation like x + y = 7, I tell them they can choose to solve for x or y, it won’t matter.    If they get two equations both solved for y (like y = x + 1 and y = 2x – 7), then they can just choose one to be “the blob”.  This way of teaching substitution works like a charm!  I noticed that after teaching elimination, students would stop using substitution, even when it was the most efficient method.  After switching over to “the blob”, it really resonated with them and they saw how easy and quick it can be.

After I’ve taught all three methods (graphing, substitution, and elimination), we do a slew of activities to review them all.  I always leave the following poster up on my board as a reminder of the different methods so students have a reference.  I also throw this up on the board at the end of the year when we are reviewing for the state test.  One look at it and I hear the “oh yeah!”‘s and they are off to work.   You can download this poster for free here!  It’s offered as both an image file (PNG) and Smart Notebook file.

Systems Method Poster

Last but not least, here are some of my favorite activities for to do with my students on systems of equations.  Check them out if you’re looking to give your systems unit a boost!

Cover Thumbnail              Cover Thumbnail            Cover Thumbnail

~Gina~
All Things Algebra

Share!
Tweet

Related Posts

Havening to the Rescue

Ever wish you had an easy way to reassure your kids (and yourselves) when emotions are strong? ...

MathLibs™ Addition Quiz 1

Addition Quiz Addition Quiz 🌟 Enter at least 5 names separated by commas: Choose the number of ...

MathLibs™ Multiplication Quiz 2

Mathlibs.org® has been helping students have fun and get over their fears of math for almost a ...

MathLibs™ Multiplication Quiz 1

Mathlibs.org® has been helping students have fun and get over their fears of math for almost a ...

Comments are closed.

"Creative experiences to motivate children to be lifelong learners, express their creativity, think critically, spread positivity, be well, and just plain have fun!"


Trending Now: ASL for Kids | Art for Kids | Rhetoric for Kids | MathLibs® | Coloring

“Roll Out” Tightness #Relax #Recover #Rejuvenate

Browse by Category:

Art for Kids: Fun Art Projects Brain Healthy Activities Coding Coloring Sheets Communication Community Helpers Creative Writing Critical Thinking DIY Crafts Emotional Wellness Fun Math Learn Spanish Positive Music for Kids Quotes in Cursive (D'Nealian Script) Rhetoric Sign Language For Kids Social Emotional Learning Social Wellness Taking it Offline We Recommend Wellness for Kids

Subscribe:

Latest Posts

  • Havening to the Rescue
  • MathLibs™ Addition Quiz 1
  • MathLibs™ Multiplication Quiz 2
  • The Power of Play: Using Play to Foster Emotional Healing and Development in Kids

Find Us on Facebook

KidCourses.com
© 1992-2018 kidCourses.com | All Rights Reserved
  • Press + Praise
  • Terms
  • Privacy
  • A LoudGiraffe Project
  • Contact Us