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Lessons (141)

Lessons (141)

8th Grade Math

(13 Units, 141 Lessons)

Unit 5 - SYSTEMS OF LINEAR EQUATIONS (19 Lessons)

Solve systems of linear functions by graphing - TWO lines on the same graph?!?

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:What does it mean when two lines intersect?

16 Resources

9 Favorites

16 Resources

9 Favorites

Solve systems of linear equations by graphing - with some real-life applications

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:Systems of linear equations can be used to solve real-life problems!

17 Resources

9 Favorites

17 Resources

9 Favorites

SUB! How can we use the properties of algebra to figure out the intersection of two lines WITHOUT graphing? (Day 1 of 3)

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:SUB! How can we use the properties of algebra to figure out the intersection of two lines WITHOUT graphing?

14 Resources

4 Favorites

14 Resources

4 Favorites

SUB! How can we use the properties of algebra to figure out the intersection of two lines WITHOUT graphing? (Day 2 of 3)

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:Fluency! Give kids lots of practice to solve systems using substitution. Push their conceptual understanding of one solution, no solutions, and infinite solutions as well.

12 Resources

3 Favorites

12 Resources

3 Favorites

SUB! How can we use the properties of algebra to figure out the intersection of two lines WITHOUT graphing? (Day 3 of 3)

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:More substitution! Get kids to isolate a variable BEFORE solving. Getting trickier...

18 Resources

1 Favorites

18 Resources

1 Favorites

Assessment #9

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:Mid-unit test! Catch misconceptions before moving too far into this systems unit...

17 Resources

1 Favorites

17 Resources

1 Favorites

Elimination 1 - add or subtract only

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:Why does elimination work? Use sensitive nieces, peppermint bark, and gingerbread men to illustrate this mathematical concept.

12 Resources

7 Favorites

12 Resources

7 Favorites

Elimination 2 - add or subtract only

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:If we don't have additive inverses, what should we do? Rather than "change the signs," push kids to understand that you are multiplying an equation by -1.

12 Resources

3 Favorites

12 Resources

3 Favorites

Elimination 3 - multiply one equation only

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:Get kids to stand up or sit down as they become fluent in multiplying one equation before using elimination.

13 Resources

3 Favorites

13 Resources

3 Favorites

Elimination 4 - multiply one equation only

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:More practice! Get kids fluent in solving systems using elimination... and push them to begin thinking about which method works best in different situations.

13 Resources

7 Favorites

13 Resources

7 Favorites

Elimination 5 - mulitply both equations

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:Yikes! What happens when you need to multiply both equations to use elimination?

13 Resources

1 Favorites

13 Resources

1 Favorites

Choose the best method to solve systems of equations

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:Choose wisely, my friend. Get kids to get meta about which method to use when solving systems of linear equations.

16 Resources

12 Favorites

16 Resources

12 Favorites

Real-life Systems 1

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:How can we use systems of linear equations in real-life systems? Get kids to understand the "break-even" point and apply algebra to the real world.

16 Resources

11 Favorites

16 Resources

11 Favorites

Real-life Systems 2

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:More application of systems to real-life! Give kids even more practice with finding and interpreting the break-even point.

16 Resources

0 Favorites

16 Resources

0 Favorites

Real-life Systems 3 - Easy Price

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:Introduce students to the idea of using the concept of systems to solve situations with two unknowns. Confidence builder!

15 Resources

1 Favorites

15 Resources

1 Favorites

Real-life Systems 4 - Sum Plus One Other

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:Get deep into algebraic thinking by solving problems that aren't so straightforward including a tricky one that pushes kids to think algebraically.

15 Resources

0 Favorites

15 Resources

0 Favorites

Real-life Systems 5 - Price-Sum Plus One Other

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:Get deep into algebraic thinking by solving problems that aren't so straightforward. A tricky one pushes kids to think algebraically.

12 Resources

2 Favorites

12 Resources

2 Favorites

Mixed Review of Systems of Equations

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:Consolidate and review! I love this lesson because it has so many different ways of asking about systems of linear equations.

12 Resources

8 Favorites

12 Resources

8 Favorites

Assessment #10 - Systems Unit Assessment

8th Grade Math

» Unit:

SYSTEMS OF LINEAR EQUATIONS

Big Idea:Assess what students know - and don't know (YET!) - about systems of linear equations.

10 Resources

0 Favorites

10 Resources

0 Favorites