Free flashcards for intro college courses

Most college students take a handful of introductory courses outside their major: a social science or two, an economics course, a government requirement, maybe nutrition or intro psychology as a science elective. Pre-health students add medical terminology and microbiology, and business students add accounting. These courses are taught from close to the same syllabus at most schools, often from the same free OpenStax textbooks.

Encodr has a free flashcard course for ten of them, with 12,522 study cards in total. Each one follows its textbook chapter by chapter, and every card is scheduled with spaced repetition. Here is what each covers, with real unit, chapter and card counts, and links to a deeper guide for each.

Medical Terminology

17 units, 82 chapters, 1,395 cards, built on the OpenRN textbook. Unit 1 teaches how terms are built: roots and combining forms, prefixes and suffixes, the rules for joining and splitting a term, plurals and unsafe abbreviations. Units 2 through 17 then walk the body one system at a time, from skin and skeleton to the reproductive systems, oncology and mental health, and a term is never used before its parts have been taught.

Medical terminology flashcards - what's in medical terminology - how to learn medical terminology fast - medical prefixes, suffixes and root words

Microbiology

18 units, 100 chapters, 1,341 cards, covering all 26 chapters of OpenStax Microbiology. It opens with microscopy and staining, the microbial cell and the Gram difference, then surveys bacteria, eukaryotic microbes and viruses. The middle third is metabolism, growth (with serial-dilution and generation-time math) and genetics; the final third is clinical: pathogenicity, epidemiology, innate and adaptive immunity, and infectious diseases body system by body system.

Microbiology flashcards - what's in microbiology - how to study for microbiology - Gram-positive vs Gram-negative bacteria

Nutrition

16 units, 88 chapters, 1,154 cards, built from the University of Hawai'i "Human Nutrition" text and checked against current authorities. It moves from basic concepts and digestion through carbohydrates, lipids, protein, alcohol and energy balance, then vitamins and minerals, the Dietary Reference Intakes and the Nutrition Facts label, and finishes with the lifespan, sports nutrition, food safety and disease. The U.S. Dietary Guidelines changed in January 2026, so every guideline card names its edition.

Nutrition flashcards - what's in a nutrition course - how to study for a nutrition class - fat-soluble vs water-soluble vitamins

Introduction to Psychology

16 units, 95 chapters, 1,356 cards, built from the 16 chapters of OpenStax Psychology 2e. It starts with what psychology is and how researchers test ideas, then covers the brain, consciousness, sensation and perception, learning, thinking and memory. The second half runs through lifespan development, emotion, personality, social psychology, stress and health, psychological disorders and therapy. Classic studies are described as they were run, and contested findings are flagged rather than taught as settled.

Intro psychology flashcards - what's in intro psychology - how to study for intro psychology - classical vs operant conditioning

Introduction to Sociology

21 units, 79 chapters, 1,254 cards, built from the 21 chapters of OpenStax Introduction to Sociology 3e. It opens with the sociological imagination, the founders and the three big perspectives, then research methods, culture, socialization, groups and deviance. The middle of the course is inequality (stratification, global inequality, race and ethnicity, gender), and the last units cover institutions such as family, religion, education, government, work and health, ending with population and social change.

Intro sociology flashcards - what's in intro sociology - how to study for intro sociology - functionalism, conflict theory and symbolic interactionism

Principles of Microeconomics

20 units, 77 chapters, 1,194 cards, built from OpenStax Principles of Microeconomics 3e. It starts with scarcity and opportunity cost, builds the supply and demand model, then covers elasticity, consumer choice, costs and the four market structures. The last units apply those tools to externalities, public goods, labor markets, inequality, insurance, financial markets and trade. Every calculation is a card whose answer was recomputed by script, and every graph is described as a scenario.

Microeconomics flashcards - what's in principles of microeconomics - how to study for microeconomics - price elasticity of demand, explained

Principles of Macroeconomics

21 units, 96 chapters, 1,270 cards, built from OpenStax Principles of Macroeconomics 3e. The first five units (scarcity through elasticity) cover the same material as the first five of the microeconomics course, so if you have taken micro, that stretch is review. After that it measures the whole economy (GDP, growth, unemployment, inflation), builds the aggregate demand and aggregate supply model, contrasts the Keynesian and neoclassical views, and ends with money and banking, monetary and fiscal policy, exchange rates and trade.

Macroeconomics flashcards - what's in principles of macroeconomics - how to study for macroeconomics - aggregate demand and aggregate supply, explained

Financial Accounting

16 units, 79 chapters, 1,217 cards, following OpenStax Principles of Accounting, Volume 1, under US GAAP. It starts with the four financial statements and the accounting equation, then the mechanics: debits and credits, journal entries, posting and the trial balance. The middle covers adjusting and closing entries, merchandising, internal controls and receivables; the last units cover inventory methods, depreciation, liabilities and bonds, corporations, partnerships and the statement of cash flows. Most cards are worked problems.

Financial accounting flashcards - what's in financial accounting - how to study for financial accounting - debits and credits, explained

Introduction to Computer Science

16 units, 80 chapters, 1,117 cards, built from OpenStax Introduction to Python Programming plus units on searching, sorting and Big-O and on testing and debugging. It runs from statements, expressions and types through decisions, loops, functions and scope, strings, lists and dictionaries, then classes, recursion, inheritance, files and exceptions. Many cards show a short snippet and ask what it prints, and every snippet was run in Python 3 first. This is the concept half of a first programming course, so use it alongside an editor, not instead of one.

Intro computer science flashcards - what's in intro computer science - how to study for intro computer science - Big-O notation explained for beginners

American Government

17 units, 90 chapters, 1,224 cards, built from OpenStax American Government 4e plus the Declaration of Independence, the Constitution and Federalist 10 and 51. It covers the founding, federalism, civil liberties and civil rights, then public opinion, elections, the media, parties and interest groups, Congress, the presidency, the courts and the bureaucracy. Two recall units gather the landmark Supreme Court cases and the Constitution's articles and amendments in one place. This is the federal course only, not a substitute for a course on your own state's government.

American government flashcards - what's in American government - how to study for American government - landmark Supreme Court cases to know

How the ten fit together

These courses connect more than their catalog listings suggest:

Microeconomics, macroeconomics and accounting share a language. Macro reuses micro's first five units outright, and accounting records the revenues and costs that micro reasons about. Business majors usually take all three in the first two years.
Psychology and sociology look at the same behavior at different scales: the individual mind versus groups and institutions. Research methods, socialization and social psychology overlap heavily.
Microbiology and nutrition both lean on general biology. Metabolism shows up in both, and food safety is applied microbiology.
Medical terminology helps everything on the health side. Microbiology, nutrition and anatomy courses all use the same roots and suffixes, and so do certification exams such as the NREMT EMT.
American government and sociology share a unit's worth of ground on government, politics and power.

If you are also taking first-year sciences, first-year biology, chemistry and physics, compared is the companion guide for those six courses.

Studying any of them

The methods that work in a science course work here too. Studying outside STEM: what actually transfers explains why: spaced repetition and retrieval practice were studied largely on vocabulary and word lists, which is most of what these courses ask you to learn. Three habits cover most of it:

Quiz yourself instead of rereading. Why rereading notes doesn't work and the testing effect explain the difference.
Spread reviews across the semester. Many of these courses end in a cumulative final, and short daily reviews of old units are what make it manageable. See studying for a cumulative final vs a unit test.
Know how big the job is. A 1,200-card course is a semester of steady work, not a weekend. The flashcard deck time estimator shows when you will finish first exposure and what your daily review load will look like.

All ten courses are free on Encodr. Start with the one you are taking this term, or browse the full course list.