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Structure in Expressions

Read expressions as meaningful parts.

◷ 6–8 min◆ 40 XP☆ 3 stars
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GRADE 9

The full learning trail

Algebra I: equations, functions, systems, polynomials, quadratics, and modeling. Finish every correction to move forward; stars do not block progress.

01
HSA.SSE.A · HSA.CED.A

Algebra Foundations

Use structure, notation, and properties with confidence.

0/4
01Structure in ExpressionsReady →
02Evaluate Formulas·
03Properties of Real Numbers·
04Literal Equations·
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02
HSA.REI.A–B

Linear Equations and Inequalities

Solve, explain, and model one-variable relationships.

Locked
01Multi-Step Linear Equations·
02One, None, or Infinitely Many·
03Linear Inequalities·
04Absolute Value Equations·
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03
HSF.IF.B–C · HSF.LE.A

Linear Functions

Connect slope, intercepts, tables, equations, and graphs.

Locked
01Slope from Points·
02Forms of a Line·
03Graph Linear Functions·
04Arithmetic Sequences·
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04
HSA.REI.C–D

Systems of Equations

Find where two linear conditions are true at once.

Locked
01Systems by Graphing·
02Systems by Substitution·
03Systems by Elimination·
04Model with Systems·
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05
HSN.RN.A · HSA.SSE.B

Exponents and Radicals

Use exponent laws and connect powers with roots.

Locked
01Integer Exponents·
02Rational Exponents·
03Simplify Radicals·
04Radical Operations·
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06
HSA.APR.A.1

Polynomials

Add, subtract, and multiply expressions built from powers.

Locked
01Polynomial Vocabulary·
02Add and Subtract Polynomials·
03Multiply Monomials·
04Multiply Binomials·
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07
HSA.SSE.B.3 · HSA.APR.B.3

Factoring

Reverse multiplication to expose polynomial structure.

Locked
01Greatest Common Factor·
02Factor Trinomials·
03Difference of Squares·
04Factor Completely·
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08
HSA.REI.B.4 · HSF.IF.C.7

Quadratic Equations

Solve and interpret equations with a squared variable.

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01Solve by Square Roots·
02Solve by Factoring·
03The Quadratic Formula·
04Graphs of Quadratics·
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09
HSF.LE.A–B

Exponential Functions

Model repeated multiplication, growth, and decay.

Locked
01Geometric Sequences·
02Exponential Growth·
03Exponential Decay·
04Linear vs. Exponential·
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10
HSS.ID.A–C

Data and Modeling

Use functions and statistics to describe real patterns.

Locked
01One-Variable Data·
02Scatter Plots and Lines of Fit·
03Correlation and Residuals·
04Choose and Interpret a Model·
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