HSA-REI.A.1

Explain each step in solving a simple equation as following from the equality of numbers asserted at the previous step, starting from the assumption that the original equation has a solution. Construct a viable argument to justify a solution method.

 
59 Lesson(s)
   

Solving Equations

Algebra I » Unit: Understanding Equations
Algebra I » Unit: Understanding Equations
James Bialasik
Amherst, NY
Environment: Suburban
 
Big Idea:

Using algebraic procedures correctly, it is possible to maintain the equivalence between two expressions while simplifying the equation that describes their relationship.

 
Favorites (15)
 
Resources (25)
 
Reflections (1)
solve equations1 image
   

True & False Equations (Day 1 of 2)

Algebra I » Unit: Understanding Equations
Algebra I » Unit: Understanding Equations
James Bialasik
Amherst, NY
Environment: Suburban
 
Big Idea:

Let's take an in-depth look at what it means for mathematical sentences to be equal.

 
Favorites (10)
 
Resources (24)
 
Reflections (2)
true false equations image
   

True & False Equations (Day 2 of 2)

Algebra I » Unit: Understanding Equations
Algebra I » Unit: Understanding Equations
James Bialasik
Amherst, NY
Environment: Suburban
 
Big Idea:

The structure of an equation gives insight into the number of solutions the equation has.

 
Favorites (6)
 
Resources (13)
 
Reflections (1)
true false equations day2 image rev
   

Review, Justification, and Critique

Algebra I » Unit: Creating Linear Equations
Algebra I » Unit: Creating Linear Equations
James Dunseith
Worcester, MA
Environment: Urban
 
Big Idea:

A recipe for critique: "I like how you did this and that, and here's what I think you should change..."

 
Favorites (2)
 
Resources (14)
 
Reflections (1)
prev345p1 resized
   

Non-Linear Systems of Equations

12th Grade Math » Unit: Conic Sections
12th Grade Math » Unit: Conic Sections
Tiffany Dawdy
Phoenix, AZ
Environment: Urban
 
Big Idea:

Students model their solutions to non-linear systems in multiple ways.

 
Favorites (1)
 
Resources (17)
nonlinear system image
   

Keeping Your Identity

8th Grade Math » Unit: Solving Linear Equations in One Variable
8th Grade Math » Unit: Solving Linear Equations in One Variable
Christa  Lemily
Bowling Green, KY
Environment: Suburban
 
Big Idea:

The proof is in the pudding, or in this case the identity properties. Learn they "why" behind how we solve equations.

 
Favorites (2)
 
Resources (21)
 
Reflections (2)
keeping your identity lesson image
   

Bring in the Sub!: Solving Systems of Equations in 2 Variables

Algebra I » Unit: Making Informed Decisions with Systems of Equations
Algebra I » Unit: Making Informed Decisions with Systems of Equations
Jason Colombino
Salem, MA
Environment: Urban
 
Big Idea:

Students complete group work on engaging real-world problems and provide constructive feedback to their peers through a gallery walk!

 
Favorites (3)
 
Resources (22)
 
Reflections (2)
dt common streams streamserver cls
   

Solving and Proving Compound Inequalities

Algebra I » Unit: Its Not Always a Straight Answer: Linear Equations and Inequalities in 1 Variable
Algebra I » Unit: Its Not Always a Straight Answer: Linear Equations and Inequalities in 1 Variable
Jason Colombino
Salem, MA
Environment: Urban
 
Big Idea:

Students actively engage in the note-taking process to master an important skill in Algebra!

 
Favorites (6)
 
Resources (20)
 
Reflections (1)
pic compound inequalities
   

Laws of Logarithms and Real Applications

Algebra II » Unit: Exponential and Logarithmic Functions
Algebra II » Unit: Exponential and Logarithmic Functions
Jarod Hammel
Huntington, IN
Environment: Suburban
 
Big Idea:

This lesson provides the students with additional support on the properties of logarithms. It concludes with an introductory problem set involving exponential equations.

 
Favorites (3)
 
Resources (16)
 
Reflections (1)
learning from others
   

Mortgages and Geometric Series DAY #3

Algebra II » Unit: Sequences and Series
Algebra II » Unit: Sequences and Series
Jarod Hammel
Huntington, IN
Environment: Suburban
 
Big Idea:

Students will work as bankers explaining how a mortgage payment is calculated to an acting client.

 
Resources (13)
 
Reflections (1)
mortgage
   

Mortgages Wrap-up and Additional Scaffolding

Algebra II » Unit: Sequences and Series
Algebra II » Unit: Sequences and Series
Jarod Hammel
Huntington, IN
Environment: Suburban
 
Big Idea:

A time of reflection over an in-depth mathematical investigation - coupled with additional practice and skill building.

 
Resources (18)
 
Reflections (1)
mortgage
   

Mortgages and Geometric Series DAY #2

Algebra II » Unit: Sequences and Series
Algebra II » Unit: Sequences and Series
Jarod Hammel
Huntington, IN
Environment: Suburban
 
Big Idea:

Mortgages made easy with knowledge of a geometric series!

 
Resources (13)
 
Reflections (1)
mortgage
   

I Absolute(ly) Don't Care About Direction: Solving and Proving Absolute Value Equations and Inequalities

Algebra I » Unit: Its Not Always a Straight Answer: Linear Equations and Inequalities in 1 Variable
Algebra I » Unit: Its Not Always a Straight Answer: Linear Equations and Inequalities in 1 Variable
Jason Colombino
Salem, MA
Environment: Urban
 
Big Idea:

Stock trading is utilized as an entry point for students to explore the strange and wonderful world of absolute value equations and inequalities.

 
Favorites (13)
 
Resources (16)
pic absolute values
   

Job Offers and Cell Phone Plans: Making Informed Decisions with Mathematics

Algebra I » Unit: Making Informed Decisions with Systems of Equations
Algebra I » Unit: Making Informed Decisions with Systems of Equations
Jason Colombino
Salem, MA
Environment: Urban
 
Big Idea:

Students learn to act as knowledgeable consumers as they model cell phone plans and make decisions about which plan best meets their needs.

 
Favorites (3)
 
Resources (32)
 
Reflections (3)
cellphone
   

Proving It

Geometry » Unit: Line-sanity!
Geometry » Unit: Line-sanity!
Stephanie Conklin
Saratoga Springs, NY
Environment: Suburban
 
Big Idea:

This lesson begins to builds students understanding of proofs using Algebra and Geometry.

 
Favorites (8)
 
Resources (25)
 
Reflections (2)
prove it image
Common Core Math
 
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