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EXCELLENCE
Excellence School
EXCELLENCE SCHOOL

Algebra Basics

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LEVEL 1 · 0/3LEVEL 2 · 0/3LEVEL 3 · 0/3LEVEL 4 · 0/3LEVEL 5 · 0/3START
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First-year algebra you do with your hands: the words of algebra, the order of operations, like terms, equations solved by keeping the balance, a coordinate plane where you drag points into place, slope as rise over run, lines you draw from y = mx + b, parallel and perpendicular lines, and systems solved where two lines cross.

3h 08m5 constellations
AT THE SUMMIT, YOU WILL BE ABLE TO

01Evaluate expressions in the right order

02Solve any linear equation and check it

03Plot points in all four quadrants

04Read and draw y = mx + b

05Solve a system by graphing

Every lesson of Algebra Basics

15 lessons in 5 levels, about 3 hours. Level 1 is free.

Level 1The Language of AlgebraFree · 3 lessons
  1. Letters for NumbersRead the words of algebra: variable, constant, expression, equation, term and coefficient.12 min
  2. Order of OperationsEvaluate any expression in the one order everyone agrees on.12 min
  3. Like Terms and DistributingSimplify an expression by distributing and combining like terms.12 min
Level 2Solving EquationsMembership · 3 lessons
  1. Keep It BalancedSolve x + a = b by doing the same thing to both sides, then check.12 min
  2. Undo MultiplicationSolve ax = b and x ÷ a = b with the division and multiplication properties.12 min
  3. Two Steps, Both SidesSolve equations with variables on both sides, in five steps.13 min
Level 3The Coordinate PlaneMembership · 3 lessons
  1. Points on the PlanePlot any ordered pair (x, y) on the coordinate plane.12 min
  2. Four QuadrantsKnow each quadrant by the signs of its points.12 min
  3. Points That SolveSee a linear equation's solutions as a line, and find where it crosses the axes.13 min
Level 4Slope and LinesMembership · 3 lessons
  1. Slope: Rise Over RunMeasure how steep a line is, and which way it goes, as rise over run.13 min
  2. y = mx + bRead a line's slope and y-intercept from y = mx + b, and draw it.13 min
  3. Parallel and PerpendicularSpot parallel and perpendicular lines by their slopes, and draw them.13 min
Level 5Systems and the Algebra TestMembership · 3 lessons
  1. Where Two Lines MeetSolve a system of two equations by graphing, and know its three outcomes.13 min
  2. Lines in Real LifeModel a real situation as y = mx + b: a fixed start plus a rate.12 min
  3. The Algebra TestUse every idea of the path: order, equations, points, slopes and systems.14 min
FREE

Level 1 is open.

Membership opens every other level of this path.

See membership
AFTER THE CORE

Keep going where this path leads.

Math for Real LifeNumbers in everyday decisions · 3h 26m
Physics, ExplainedAlgebra at work · 3h 02m