High school
Grade 9 curriculum
Grade 9 at OHM School covers 5 subjects — Algebra I, Biology, Electives & Languages, English I and World History & Geography — across 224 learning lessons, mapped to California academic standards. It also includes 6 SI-ready courses — Meta-Learning & Cognitive Science, Advanced AI Development, Startup Incubator, Behavioral Psychology & Interpersonal Dynamics, Consciousness & Philosophical Frameworks and Geopolitics & Future Studies — from OHM's SI readiness programme. Every subject is a book on the shelf below: open one to see its units and the lessons inside each unit.
- Subjects
- 5
- SI-ready courses
- 6
- Units
- 40
- Learning lessons
- 224
Tap a book to take it down and open it: its units, and every lesson inside them.
5 subjects
6 SI-ready
Grade 9 Algebra I
OHM School · Grade 9
Algebra I
9 units · 62 lessons
It opens with Quantities and Expressions and closes with Statistics.
See the full pageAll units
All units
Lessons
Unit 1 of 9
Quantities and Expressions
5 lessons
Lessons
- 1Units and Quantities
- 2Defining Quantities for Models
- 3Precision and Accuracy
- 4Interpreting Parts of Expressions
- 5Using Structure to Rewrite Expressions
Unit 2 of 9
Linear Equations and Inequalities
6 lessons
Lessons
- 1Justifying Steps in Solving
- 2Solving Multi-Step Linear Equations
- 3Writing Equations and Inequalities
- 4Literal Equations and Formulas
- 5Solving Linear Inequalities
- 6Compound Inequalities
Unit 3 of 9
Functions and Linear Modeling
10 lessons
Lessons
- 1Functions, Domain, and Range
- 2Function Notation
- 3Key Features of Graphs
- 4Domain in Context
- 5Average Rate of Change
- 6Graphing Linear Functions
- 7Writing Linear Models
- 8Equations in Two Variables
- 9Comparing Linear Functions
- 10Interpreting Parameters
Unit 4 of 9
Sequences
3 lessons
Lessons
- 1Sequences as Functions
- 2Arithmetic Sequences
- 3Geometric Sequences
Unit 5 of 9
Systems of Equations
6 lessons
Lessons
- 1Solving Systems by Graphing
- 2Systems by Substitution and Elimination
- 3Special Cases: No Solution and Infinite Solutions
- 4Constraints and Viable Solutions
- 5Graphing Linear Inequalities
- 6Systems of Linear Inequalities
Unit 6 of 9
Exponents and Exponential Functions
8 lessons
Lessons
- 1Rational Exponents
- 2Radicals and Rational Exponents
- 3Rational and Irrational Numbers
- 4Linear vs Exponential Growth
- 5Writing Exponential Functions
- 6Graphing Exponential Functions
- 7Growth and Decay in Context
- 8Exponential Eventually Wins
Unit 7 of 9
Polynomials
6 lessons
Lessons
- 1Polynomials as a Number System
- 2Adding and Subtracting Polynomials
- 3Multiplying Polynomials
- 4Factoring Polynomials
- 5Factoring Trinomials
- 6Special Products
Unit 8 of 9
Quadratics
9 lessons
Lessons
- 1Graphing Quadratic Functions
- 2Key Features of Quadratic Graphs
- 3Solving Quadratics by Factoring
- 4Solving by Square Roots
- 5Completing the Square
- 6The Quadratic Formula
- 7Vertex Form
- 8Transformations of Functions
- 9Modeling with Quadratics
Unit 9 of 9
Statistics
9 lessons
Lessons
- 1Data Displays
- 2Comparing Center and Spread
- 3Shape and Outliers
- 4Two-Way Frequency Tables
- 5Fitting Functions to Data
- 6Residuals
- 7Interpreting Linear Models
- 8The Correlation Coefficient
- 9Correlation Is Not Causation
Grade 9 Biology
- Cells and Organization
- Body Systems and Homeostasis
- Cellular Biochemistry
- Cell Division
- DNA Replication and Protein Synthesis
- Genetics
- Evolution
- Ecosystems
- Humans and Biodiversity
Grade 9 Electives & Languages
- World Language I: Vocabulary and Conjugation
- Physical Education I: Wellness Planning
- Health: Personal Safety
- Computer Science Principles
Grade 9 English I
- Short Stories: Character and Structure
- Literary Genres
- Epic Poetry
- Shakespearean Drama
- World Literature
- Author's Craft
- Reading Informational Texts
- Writing
- Multi-Source Synthesis
- Speaking and Listening
- Grammar, Usage, and Vocabulary
Grade 9 World History & Geography
- Foundations of Western Political Thought
- The Renaissance and Reformation
- The Age of Exploration
- The Enlightenment
- Revolutions
- Global Industrialization
- The Age of Imperialism
Grade 9 Meta-Learning & Cognitive Science
- Strategies and Syllabi
Grade 9 Advanced AI Development
- How Machine Learning Works
- Better Data, Better Models
- How Language Models Work
Grade 9 Startup Incubator
- Validate Before You Build
Grade 9 Behavioral Psychology & Interpersonal Dynamics
- Motivation and Groups
Grade 9 Consciousness & Philosophical Frameworks
- Models of the Self
Grade 9 Geopolitics & Future Studies
- Technology and Development
About this outline: these lessons form the available learning path. Educator approval of standards mappings and assessment evidence is a separate review. See the evidence and review methodology.
How Grade 9 is taught
A list of units is not a way of teaching them.
- Taught in orderLessons unlock as the one before is mastered, so a Grade 9 student is never moved on from something they have not understood.
- Adapted per childThe same 224 lessons are taught at the reading level and pace each child is actually working at.
- Visible to a parentProgress is recorded as mastery of specific concepts, not as lessons ticked off, and a guardian follows it from their own dashboard.
Getting started
Want your child taught Grade 9?
OHM School teaches every unit above with adaptive tutoring, mastery practice, and progress a parent can actually see.