(11) Algebra 1: Solutions & Equality
Topic outline
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Essential Questions
- What does it mean to "Solve an equation"? How do you know if you've done it?
- What are some different ways to represent equality? What some pros and cons of each?
Knowledge Goals
- Create Frayer diagrams for the following words: equation, variable, unknown, coefficient, solution, non-solution, solving, isolate, check.
Insight Goals
Skill Goals
- Solve and check linear equations.
- Represent and solve equations in a variety of ways.
Learning Sequence
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If you have already mastered this lesson's content, skip it.
I will...
- Do the Equal or Not? exercises, making sure I can do it all by hand.
- Learn to check my work above using Symbolab or Microsoft Math Solver.
- Practice explaining, from scratch, the meaning of the equals sign and the not equals sign, and what it means to solve, simplify, and interpret equations.
I can...
- Correctly interpret and use the equals sign and the not equals sign.
- Solve and simplify basic equations and judge them accurately as true or false.
- Explain from scratch all of the above based on examples that I create.
As assessed by...
[coming soon]
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I will...
- Solve and check the Noah's Ark problem.
- Solve and check Visual Balance Problems. I will represent my thinking with equations.
- Solve Balance Problems.
- Solve and Check Equations Visually
- Solve Equations by Guess & Check [template] while using reasoning to iterate my guesses. [Teacher will have to create exercises.]
- Do Equations and Solutions Exercises, Levels 1-4 [work-in-progress]. If this is too easy, I will create more challenging exercises for myself with this template.
- Do model equations linearly. [Under construction.]
- Draw an equation clock in which each hour number is represented by an equation for which that hour number is a solution. E.g. ten o'clock below
So I can...
- Translate between visuals and setup equations for balance problems of forms x+b=c, ax=c, ax+b=c, and all jumbled variations thereof, where all variables are non-negative integers and easy to visualize.
- Solve the balance problems with logic and guess-and-check.
- Check my work visually, symbolically, and with software.
- Show by example what the following words mean: equation, solution, non-solution, check.
As assessed by...
[coming soon]
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I will...
[coming soon]
So I can...
- Translate between visuals and setup equations for balance problems of forms ax+b=cx+d and and all jumbled variations thereof, where all variables are non-negative integers, some of which are easy to visualize.
- Solve all equations of the form ax+b=cx+d and all jumbled variations thereof involving fractions that are easy to visualize and draw, by guess and check.
- Create my own examples of linear equations to solve.
- Check my work visually, symbolically, and with software.
As assessed by...
[coming soon]
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I will...
- Solve and check balance problems visually by isolation (and ignore the math symbols for now) in Solve & Check - Example & Exercises.
- Solve balance problems through isolation that I have to draw myself. Boxes & Circles, Levels 4, 5, and 6.
- Create my own solve and check problems with the Isolate then Check [template]
- For each of addition, subtraction, multiplication, and division, create an example and non-example of a manipulation that preserves equality.
So I can...
- Solve visually represented equations visually by isolating the unknown.
- Explain how doing the same thing to both sides preserves equality.
As assessed by...
[coming soon]
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I will...
- See how well I understand preservation of equality in
- This Twitter thread [Focus on the 3 highest webs on the left.]
- JUMP 7.1 Scale Diagrams
- Drill solving equations.
- Do JUMP 6 Solving Symbolicallyexercises.
- Create my own problems and solutions with this balance template.
So I can...
- Describe all my previous visual solutions symbolically, including every step and check, using correct math terminology.
- Solve and check linear equations symbolically using more than 1 method.
- Distinguish manipulations that do and do not preserve equality.
- Distinguish manipulations between the useful and the non-useful.
As assessed by...
[coming soon]
- See how well I understand preservation of equality in
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I will...
- Solve the "Think of a Number" trick and be able to explain it to others. Create my own variations on the trick and perform them.
- Solve any previous equations from previous lessons using inverse operations.
So I can...
- Solve and check linear equations using inverse operations or the same manipulation to both sides.
- Show these methods' equivalence.
- Use both methods to solve magic tricks.
As assessed by...
[coming soon]
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I will...
[coming soon]
So I can...
- Solve equations of the form ax + b = cx + d involving rational numbers and numbers that are difficult to visualize. I can solve them in multiple ways.
- "Look ahead" to determine when solutions exist and when they do not.
- Set up and solve equations in applied situations.
As assessed by...
[coming soon]