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
8th Grade Math
» Unit:
SYSTEMS OF LINEAR EQUATIONS
Big Idea:What does it mean when two lines intersect?
Solve systems of linear equations by graphing - with some real-life applications8th Grade Math» Unit: SYSTEMS OF LINEAR EQUATIONS
8th Grade Math
» Unit:
SYSTEMS OF LINEAR EQUATIONS
Big Idea:Systems of linear equations can be used to solve real-life problems!
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
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?
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
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.
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
8th Grade Math
» Unit:
SYSTEMS OF LINEAR EQUATIONS
Big Idea:More substitution! Get kids to isolate a variable BEFORE solving. Getting trickier...
Assessment #9 8th Grade Math» Unit: SYSTEMS OF LINEAR EQUATIONS
8th Grade Math
» Unit:
SYSTEMS OF LINEAR EQUATIONS
Big Idea:Mid-unit test! Catch misconceptions before moving too far into this systems unit...
Elimination 1 - add or subtract only 8th Grade Math» Unit: SYSTEMS OF LINEAR EQUATIONS
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.
Elimination 2 - add or subtract only 8th Grade Math» Unit: SYSTEMS OF LINEAR EQUATIONS
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.
Elimination 3 - multiply one equation only 8th Grade Math» Unit: SYSTEMS OF LINEAR EQUATIONS
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.
Elimination 4 - multiply one equation only 8th Grade Math» Unit: SYSTEMS OF LINEAR EQUATIONS
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.
Elimination 5 - mulitply both equations 8th Grade Math» Unit: SYSTEMS OF LINEAR EQUATIONS
8th Grade Math
» Unit:
SYSTEMS OF LINEAR EQUATIONS
Big Idea:Yikes! What happens when you need to multiply both equations to use elimination?
Choose the best method to solve systems of equations8th Grade Math» Unit: SYSTEMS OF LINEAR 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.
Real-life Systems 18th Grade Math» Unit: SYSTEMS OF LINEAR EQUATIONS
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.
Real-life Systems 28th Grade Math» Unit: SYSTEMS OF LINEAR EQUATIONS
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.
Real-life Systems 3 - Easy Price 8th Grade Math» Unit: SYSTEMS OF LINEAR EQUATIONS
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!
Real-life Systems 4 - Sum Plus One Other 8th Grade Math» Unit: SYSTEMS OF LINEAR EQUATIONS
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.
Real-life Systems 5 - Price-Sum Plus One Other 8th Grade Math» Unit: SYSTEMS OF LINEAR EQUATIONS
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.
Mixed Review of Systems of Equations8th Grade Math» Unit: SYSTEMS OF LINEAR 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.
Assessment #10 - Systems Unit Assessment 8th Grade Math» Unit: SYSTEMS OF LINEAR EQUATIONS
8th Grade Math
» Unit:
SYSTEMS OF LINEAR EQUATIONS
Big Idea:Assess what students know - and don't know (YET!) - about systems of linear equations.
