The visual guide to

ACT®

49 units, 635 topics. Each topic is explained in writing, drawn as a lesson you can watch, and checked with practice questions.

Each unit is as wide as its share of its test section. Striped units aren't weighted on the exam.Filled: topics you've opened.

Unit 1English: Sentence Structure and Formation38–43% shared24 topics
Unit 2English: Usage Conventions38–43% shared26 topics
Unit 3English: Punctuation Conventions38–43% shared24 topics
Unit 4English: Topic Development — Relevance, Focus, and Deletion38–43% shared7 topics
Unit 5English: Topic Development — Purpose, Effect, and Goal38–43% shared10 topics
Unit 6English: Organization, Unity, and Cohesion — Transitions38–43% shared7 topics
Unit 7English: Organization, Unity, and Cohesion — Placement, Paragraphing, Openings and Closings38–43% shared10 topics
Unit 8English: Knowledge of Language — Concision and Redundancy18–23% shared7 topics
Unit 9English: Knowledge of Language — Clarity, Word Choice, Style and Tone18–23% shared11 topics
Unit 10English: Argumentative Essays, Short Essays, and Whole-Passage Questions12 topics
Unit 11Math: Number and Quantity10–12%21 topics
Unit 12Math: Algebra17–20%28 topics
Unit 13Math: Functions — Properties of Functions17–20% shared13 topics
Unit 14Math: Functions — Composition, Transformation, and Inverse Functions17–20% shared12 topics
Unit 15Math: Functions — Sequences and Series17–20% shared9 topics
Unit 16Math: Functions — Trigonometric Functions17–20% shared11 topics
Unit 17Math: Functions — Exponential and Logarithmic Functions17–20% shared10 topics
Unit 18Math: Functions — Relating Graphs to Situations and Building Functions17–20% shared12 topics
Unit 19Math: The Modeling Overlay≥20%6 topics
Unit 20Math: Geometry — Transformations, Proof, and Constructions17–20% shared21 topics
Unit 21Math: Geometry — Similarity, Right Triangles, and Trigonometry17–20% shared18 topics
Unit 22Math: Geometry — Coordinate Geometry and Conic Sections17–20% shared18 topics
Unit 23Math: Geometry — Properties of Circles17–20% shared13 topics
Unit 24Math: Geometry — Geometric Measurement and Modeling17–20% shared20 topics
Unit 25Math: Statistics and Probability — Describing Data12–15% shared12 topics
Unit 26Math: Statistics and Probability — Inference, Probability, and Counting12–15% shared12 topics
Unit 27Math: Integrating Essential Skills20%16 topics
Unit 28Math: Pacing, Four Choices, and Question Strategy9 topics
Unit 29Reading: The Section, the Genres, and the Formats7 topics
Unit 30Reading: Pace, Scoring, and Text Complexity8 topics
Unit 31Reading — Key Ideas and Details: Close Reading44–52% shared7 topics
Unit 32Reading — Key Ideas and Details: Central Ideas, Themes, and Summaries44–52% shared7 topics
Unit 33Reading — Key Ideas and Details: Relationships44–52% shared7 topics
Unit 34Reading — Craft and Structure: Word Meanings and Word Choice26–33% shared8 topics
Unit 35Reading — Craft and Structure: Text Structure26–33% shared7 topics
Unit 36Reading — Craft and Structure: Purpose and Point of View26–33% shared7 topics
Unit 37Reading — Integration of Knowledge and Ideas: Arguments19–26% shared7 topics
Unit 38Reading — Integration of Knowledge and Ideas: Synthesis of Multiple Texts19–26% shared8 topics
Unit 39Reading — Integration of Knowledge and Ideas: Visual and Quantitative Information19–26% shared7 topics
Unit 40Science: The Section, the Clock, and the Optional Decision9 topics
Unit 41Science: The Three Passage Formats6 topics
Unit 42Science: Interpretation of Data (13-17 items)38–50%17 topics
Unit 43Science: Scientific Investigation (6-11 items)18–32%16 topics
Unit 44Science: Evaluating Scientific Arguments and Models with Evidence (8-13 items)24–38%15 topics
Unit 45Science: Background Knowledge - Life Science15 topics
Unit 46Science: Background Knowledge - Physical Science15 topics
Unit 47Science: Background Knowledge - Earth and Space Science15 topics
Unit 48Writing: The Optional Essay and Its Four Domains24 topics
Unit 49The Enhanced ACT: Format, Scoring, and the Clock24 topics