9th grade Texas curriculum
What 9th grade students practice in Gradelings, unit by unit, matched to the Texas Essential Knowledge and Skills (TEKS). Tap any unit to see what it covers and try sample questions.
Math
- Linear RelationsSlope, intercepts and graphs
- Coordinate GeometryDistance, midpoint and slope
- Lines & IntersectionsGraphs, inequalities and transformations
- Function Notationf(x), domain and range
- Multi-Step EquationsBrackets, fractions and both sides
- Linear InequalitiesSolve and write inequalities
- Solving SystemsElimination and substitution
- Data & Scatter PlotsQuartiles, box plots and correlation
- Two-Way Tables & CausationRelative frequency and correlation
- PolynomialsAdd, subtract, expand and evaluate
- ExpressionsBuild, compare and match
- Factoring & QuadraticsFactor and solve x² equations
- Exponents & PowersExponent laws and scientific notation
- Linear or Exponential?Add each time or multiply each time
- SequencesArithmetic and geometric
- Rearranging FormulasSolve for any letter
English Language Arts(“Language Arts” in the app)
- Close ReadingInference, theme and author's craft
- Literary ElementsIrony, motif, tone and mood
- Grammar & StylePunctuation, agreement and register
- Word DetectiveRoots, prefixes and meaning in context
- Literary DevicesAllusion, analogy, juxtaposition, flashback
- Digital SmartsTrust, privacy and credible sources
- Forms & FeaturesText patterns, visuals and media
- Summarizing TextsFind the main ideas and put them in your own words.
- Form & ComposingPick the right form for your audience and shape a clear text.
- Research & CredibilityPeer review, AI output and synthesis
- ProofreadingSpelling and word choice in final drafts
- Media AnalysisRhetoric, framing and synthetic media
- Borrowed Words & ConnotationBona fide, caveat, carte blanche and more, plus denotation and connotation.
- Drama, Satire & FallaciesAsides, soliloquies, dramatic irony and satire; understatement, straw men and red herrings.
Science
- Cells from CellsDNA, mitosis and growth
- ReproductionAsexual and sexual reproduction
- Microbes & the Immune SystemGerms, vaccines and pandemics
- Infectious DiseaseGerms, vaccines, antibiotics and how diseases change.
- Evolution & SelectionVariation, adaptation and how populations change over time.
- Photosynthesis & RespirationHow cells make and use energy
- Biomolecules & EnzymesCarbohydrates, lipids, proteins and nucleic acids, and how enzymes speed up reactions.
- Cell Types, Transport & SpecializationProkaryotes and eukaryotes, moving molecules across membranes, and how cells specialize.
- DNA, RNA & ProteinsDNA's structure, how genes become proteins, mutations and DNA technology.
- Genetic CrossesPunnett squares, dominance, codominance, incomplete dominance and sex-linked traits.
- Evidence & Mechanisms of EvolutionFossils, biogeography and homologies, rates of change, speciation, drift and gene flow.
- Systems in Animals & PlantsHow body systems work together, and how plant systems transport, reproduce and respond.
- Ecosystem StabilityEcological relationships, energy flow, matter cycles and biodiversity.
- Carbon & Nitrogen CyclesHow carbon and nitrogen move through living things, air, water and soil, and what happens when the cycles are disrupted.
Social Studies
- Foundations of DemocracyIdeas behind the Constitution
- Forms of GovernmentDemocracy, monarchy and more
- Taking PartSpeak up, check facts, decide together
- Media & DemocracyA free press and a careful public
- Three BranchesCongress, the president and the courts
- Rights & ResponsibilitiesThe Bill of Rights and citizens' duties
- Landmark Supreme Court CasesHow the Court reads the Constitution
- Elections & VotingRegistering, primaries and the Electoral College
- How Laws Are MadeBills and vetoes, in Congress and in Austin
- Government & the EconomyTaxes, budgets and policy
- Federalism & Texas GovernmentNational, state and local powers
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