Algebra 1 Grades 9 to 12
Build a full Algebra 1 year in the Loft: expressions, equations, functions, systems, exponents, polynomials, quadratics and data, every answer checked.
Free, start to finish. No card. Every week opens without signing in.
- Grade
- Grades 9 to 12
- Length
- 12 weeks
- Pace
- 6 short lessons a week, about 20 minutes each
- Price
- Free, every week
About this course
Algebra 1 Grades 9 to 12 is a 12-week high-school algebra course. Students join Comet and Wren in the Loft, the crew's garage workshop, as they design a ramp course and a bottle-rocket launcher for the neighborhood Maker Fair, and every week's math makes a build work. The course covers units and quantities, interpreting expressions, linear equations and inequalities, functions and function notation, linear graphs and models, arithmetic and geometric sequences, systems of equations and inequalities, rational exponents and exponential growth and decay, polynomial arithmetic, factoring, solving quadratic equations by factoring, square roots, completing the square and the quadratic formula, quadratic graphs and transformations, and lines of best fit on two-variable data. Every week lists the Common Core high-school standards it practices. Short daily lessons with checked answers, a hands-on Loft Lab build each week and a Saturday Loft Day for the family. No accounts, apps or software needed. 100% free, start to finish.
Kids will
- Use units, reasonable precision and the structure of an expression to make sense of a quantity
- Create and solve linear equations, inequalities and systems, and explain each step
- Read, write, evaluate and graph functions, including linear, exponential and quadratic models
- Work with rational exponents and tell linear growth from exponential growth
- Add, subtract, multiply and factor polynomials, and solve quadratic equations four ways
- Fit and interpret a line on two-variable data and judge how well it fits
The 12 weeks
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Week 1
Quantities and the Shape of an Expression
Units that cancel, numbers that mean something
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Week 2
Equations and Inequalities in One Variable
Keep both sides equal, and know why
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Week 3
Functions
One input, exactly one output
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Week 4
Linear Graphs and Rates of Change
The cart on the ramp, one second at a time
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Week 5
Linear Models and Sequences
The cup tower and the filling jug
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Week 6
Systems of Equations and Inequalities
Two carts meet, and a region of good builds
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Week 7
Exponents and Exponential Change
Linear change adds, exponential change multiplies
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Week 8
Polynomials
Tiles for the launch pad
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Week 9
Factoring
Sliding the tiles back into a rectangle
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Week 10
Quadratic Equations
When is the height zero?
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Week 11
Quadratic Functions and Their Graphs
The rocket's path is a parabola
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Week 12
Data From the Loft and Fair Day
Scatter plots, lines of best fit and the family fair
Try Week 1 today.
Open the course, pick Day 1 and go. Make a free parent account when you want progress saved for each kid.