ACT (American College Testing) study guides

ACT English Usage and Mechanics questions test punctuation, grammar, and sentence structure — covering about 40% of the 75-question English section.

ACT English Rhetorical Skills questions test writing strategy, organization, and style — assessing your ability to improve the clarity and effectiveness of a passage.

ACT Math Pre-Algebra covers number theory, ratios, proportions, percent change, and basic statistics — representing 14–16 of the 60 Math questions.

ACT Math Intermediate Algebra covers linear equations and systems, inequalities, absolute value, quadratics, and basic functions — representing 14–16 of the 60 Math questions.

ACT Math Geometry covers plane geometry, coordinate geometry, and three-dimensional solids — representing 18–20 of the 60 Math questions, the largest single content area.

ACT Math Trigonometry covers trig functions (SOHCAHTOA), basic identities, the unit circle, and graphs of sine and cosine — representing 4–6 of the 60 Math questions.

ACT Reading Literary Narrative passages test character inference, narrative technique, tone, point of view, and the function of specific scenes or details within a short fiction or memoir excerpt.

ACT Reading Social Science passages test informational reading skills: identifying main ideas, understanding arguments, evaluating evidence, and making inferences from nonfiction texts in fields like psychology, sociology, history, and economics.

ACT Science Data Representation questions require reading and interpreting charts, graphs, tables, and figures from experimental data — representing about 40% of the 40-question Science section.

ACT Science Research Summaries questions test understanding of experimental methodology — identifying variables, controls, and design flaws, and drawing valid conclusions from multi-experiment data.