Learn anything. Modular, by topic.
Noduly hosts modular educational web apps across 16 subjects — full-coverage, interactive, and built to be played with. Pick a topic, jump in, learn by doing. Everything runs in your browser. No install.
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Chemistry
Elements, reactions, calculations and the laws that govern matter.
Periodic Table
All 118 elements with full chemistry data — quizzes, flashcards, mystery game, reaction simulator.
Chemical Bonding
Ionic, covalent and metallic bonds with a bond-type predictor, Lewis-dot builder, NaCl lattice and electron-sea animation.
Balancing Chemical Equations
Coefficient trainer with live atom counter, speed drill and an automatic balancer that handles parentheses and polyatomic ions.
Acids, Bases & pH
pH calculator, virtual indicator flask, live titration curve and a strong-vs-weak strength chart.
Stoichiometry & Mole Calculations
Molar mass calculator, mole/mass/particle/volume converter, limiting reagent solver and percent-yield calculator.
Naming Compounds
Formula↔name converters for ionic, covalent and acid compounds, polyatomic-ion drill and a 30-ion reference table.
Reaction Types
Auto-classifier for synthesis, decomposition, single/double replacement, combustion and acid-base; activity series and solubility predictors.
Lab Safety & Equipment
All nine GHS hazard pictograms, 15 pieces of glassware, equipment-ID drill, scenario quiz and a PPE selector.
Worked Examples
Step-by-step walk-through of multistep chemistry problems — combustion, limiting reagent, titration and percent yield, all in one guided flow.
Civics & Government
How governments are structured, how laws are made and how citizens engage.
Branches of Government
US and parliamentary systems, side by side. Bill-to-law simulator, veto math, daily challenge.
The Constitution & Amendments
All 7 articles + 27 amendments with plain-language summaries, timeline, era comparisons, and a ratification simulator.
How a Bill Becomes a Law
17-step walkthrough of the US legislative process, bill simulator, 9 famous-bill case studies, and override math.
Voting & Elections
Registration, primaries, the Electoral College, ballot mechanics, recounts — plus an interactive 270-EV map and 10 historic elections.
Landmark Civil Rights Cases
35 Supreme Court decisions that shaped American rights — race, voting, criminal procedure, speech, privacy, LGBTQ+, religion.
Government Roles & Responsibilities
38 roles from President to school board — who does what, how chosen, terms, eligibility. Includes a "who handles this?" simulator.
Computer Science / Logic
How machines compute, how we instruct them, and the logic underneath it all.
Binary, Decimal & Hex Conversion
Live four-base converter with step-by-step walkthrough, 32-bit toggle grid, bitwise playground, ASCII reference and quizzes.
Logic Gates
Switch-driven AND, OR, NOT, NAND, NOR, XOR, XNOR with truth tables, gate combiner, and a built-in half/full adder.
Sorting Algorithms
Eight algorithms (bubble, insertion, selection, merge, quick, heap, shell, radix) — solo runner, side-by-side race, full complexity table.
Basic Coding Concepts
Ten fundamentals with side-by-side Python / JavaScript / Java syntax, an interactive line-by-line trace and 29-term glossary.
Boolean Logic & Truth Tables
Type any expression — generate the full truth table, SOP / POS forms, tautology and contradiction detection, plus a step evaluator.
Data Structures Visualizer
Animated arrays, linked lists, stacks, queues, hash tables and binary search trees — insert, delete and search node-by-node.
Driver's Education
Pass the permit test and stay safe behind the wheel.
Road Sign Recognition
56 MUTCD signs in 7 categories — shape & color rules, quiz, flashcards, mystery game, daily challenge.
Right-of-Way Rules
14 intersection scenarios with bird's-eye view, who-goes-first drill, flashcards, daily challenge.
State Traffic Laws
All 50 states + DC with speed, BAC, phone, helmet, seat-belt and permit data — tile map, compare, quiz.
Parallel Parking Visualizer
7-step animated maneuver, reference points, mirror cues, DMV scoring rubric and common mistakes.
Defensive Driving Concepts
SIPDE, Smith System, stopping-distance calculator, following-distance simulator, reaction-time game.
Financial Literacy
The math of money — earning, saving, borrowing and growing it.
Compound Interest & Time Value
Interactive growth calculator with chart, simple-vs-compound, Rule of 72, FV/PV.
Budgeting Fundamentals
50/30/20, zero-based and envelope methods compared, with a hands-on planner and donut chart.
Credit Scores
The five FICO factors, score gauge simulator, and what actually moves your score.
Taxes 101
2024 brackets, W-2 vs 1099, deductions, and a federal-tax estimator with bracket visualization.
Loans & Interest Rates
APR, principal and amortization schedule with extra-principal payoff simulator.
Investing Basics
Stocks, bonds and index funds — with an allocation simulator showing return and worst-year loss.
Retirement Account Types
401(k), IRA, Roth, HSA compared, with a Roth-vs-traditional simulator and funding-priority guide.
Foreign Languages
Build vocabulary, grammar and pronunciation across major world languages.
Spanish
200+ vocabulary words, full verb conjugation tables, pronunciation guide with native audio, quizzes, flashcards.
French
Vocabulary with gender, verb conjugation, accent guide (é è ê ç ï), nasal vowels, liaison, native audio.
Mandarin Chinese
200+ characters, the four tones with audio, pinyin, common radicals, 50+ survival phrases.
German
All four cases (Nom./Akk./Dat./Gen.) with declension tables, gendered nouns, verb conjugation, pronunciation.
American Sign Language
A–Z fingerspelling with hand-shape illustrations, numbers, 60+ common signs, ASL grammar, fingerspelling drill.
Latin & Greek Roots
150+ Latin and Greek roots, prefixes, suffixes with derivative examples and a word-builder game.
Geography
Countries, capitals, terrain and the layout of our world.
World Countries & Capitals
198 entries with map, flags, region stats, capital-distance and time-zone tools.
US States
All 50 states with capitals, regions, abbreviations, tile map and a daily challenge.
Continents & Oceans
Seven continents and five oceans — peaks, basins, schematic map and side-by-side compare.
Time Zones & Lat/Long
Live world clocks, time-zone converter and an interactive equator/meridian explorer.
Major Cities of the World
100 cities with population, coordinates, founding dates and key facts.
Mountains, Rivers & Landmarks
Top peaks, longest rivers and the world's great natural and built landmarks.
Health & Life Skills
How your body works and the everyday knowledge that keeps it running.
Nutrition Basics
Macros, vitamins and the major food groups.
Exercise Science & Anatomy
Muscle groups, movement and the science of training.
Sleep Science
Cycles, hygiene and why sleep matters more than you think.
Mental Health Basics
Anxiety, depression and where to find real support.
How Medications Work
Mechanisms, categories and common interactions.
First Aid Essentials
CPR, bleeding control, burns, choking and shock.
History & Social Studies
The people, events and forces that shaped the modern world.
US Presidents
All 47 presidents — terms, parties, vice presidents, key events. Timeline, quiz, daily challenge, date calculator.
World Historical Timelines
Civilizations, wars, revolutions and breakthroughs from prehistory to today on one unified scale.
Ancient Civilizations
Egypt, Greece, Rome, China and Mesopotamia in depth — timeline, rulers, inventions, gods, daily challenge.
World Wars
Causes, key battles, leaders and outcomes of WWI and WWII — switch between wars, compare battles, compute casualties.
Major Inventions & Inventors
From the wheel to mRNA vaccines — explore the technologies that reshaped how humans live and work.
Famous Historical Figures
Leaders, thinkers, scientists, artists and change-makers across eras — lifespan timeline, quotes, mystery game.
Language & Literature
The mechanics of English and the works that defined the canon.
Parts of Speech
Nine parts of speech with a sentence-builder game, color-the-sentence challenge, and quizzes.
Prefixes, Suffixes & Word Roots
90+ Latin and Greek building blocks with a word-builder, quizzes, and flashcards.
Vocabulary by Grade Level
Grade-aligned word lists from K-2 through SAT/ACT — definitions, examples, matching game.
Punctuation & Grammar Rules
35+ rules with right/wrong examples and a one-error proofreading game.
Shakespearean Plays
All 38 plays — characters, plots, themes, famous quotes, timeline.
Literary Devices
40+ devices — metaphor, simile, alliteration — with real quotes and a device-spotting game.
Famous Authors & Their Works
48 canonical writers across 28 centuries — bios, works, timeline, quizzes, flashcards, and a daily challenge.
Logic & Critical Thinking
Train the mind to spot bad arguments and reason under uncertainty.
Cognitive Biases
24 biases in 6 families, live anchoring lab, base-rate trainer, spot-the-bias scenarios.
Logical Fallacies
24 fallacies with form, mechanism and rebuttal — plus an argument deconstructor.
Reading Data Critically
Truncated-axis slider, cherry-pick window, per-capita toggle, spurious correlations.
Probability Intuition Puzzles
Monty Hall live sim, birthday paradox, Bayes/base-rate trainer, gambler's-fallacy demo.
Formal Logic Basics
Live truth-table builder, validity checker, syllogism walk-through, De Morgan and quantifiers.
Math
Arithmetic to calculus — patterns, structures and the language of measurement.
Multiplication & Division Tables
Interactive grid 1×1 to 15×15, timed drills, flashcards, missing-number mystery, long-division calculator.
Fractions, Decimals & Percentages
Bar comparator, pie slicer, triple converter, discount/tip playground and step-by-step adder.
Geometric Shapes & Properties
Click-to-explore gallery, polygon builder, 3D solid stats and a symmetry visualizer.
Prime Numbers & Factors
Animated Sieve of Eratosthenes, factor tree, GCF/LCM Venn and divisibility-rule tester.
Algebra Basics
Balance-scale solver, slope-intercept playground, inequality grapher, word-problem translator.
Geometry Theorems
Pythagorean squares visualizer, 3D volume slider, distance walker and congruence matcher.
Trigonometry
Draggable unit circle, wave-transform lab, SOHCAHTOA solver and angle-of-elevation simulator.
Statistics & Probability
Dice and coin simulator, histogram builder, scatter + regression line, probability tree.
Calculus Concepts
Limit explorer, tangent slider, Riemann sum visualizer, position-velocity-acceleration animator.
Music & Arts
The vocabulary of sound and image — theory, history and practice.
Musical Notes & Staff Reading
Treble, bass, alto and tenor clef trainer with note ID drill, rhythm values, key signatures, ear-training playback and a daily challenge.
Musical Instruments by Family
50+ instruments across strings, brass, woodwind, percussion, keyboard and voice with detail cards, range chart and audio samples.
Music Theory
Scales, chords, intervals and chord progressions on a playable keyboard, plus ear-training drills and a daily challenge.
Famous Paintings & Movements
40+ landmark paintings across 17 movements — Renaissance through Pop Art — with timeline, drill, flashcards and mystery game.
Color Theory & Color Wheel
Interactive wheel, harmonies, RGB/HSL/CMYK conversion, contrast checker, color-blindness simulation and mixer.
Composers & Their Eras
50+ composers across Medieval to Contemporary with playable themes, timeline, drill and a daily challenge.
Science
The natural world from cells to galaxies — biology, earth science, astronomy and beyond.
Solar System & Space
All eight planets and Pluto with NASA fact-sheet data, 40+ named moons, animated orbits, true-scale visualizer, drills, mystery game, and a seeded daily challenge.
Animal Classification
Kingdom to species drill-down across the animal kingdom — explorer, tree visualizer, classify-this-animal, quizzes, flashcards, mystery game, daily challenge.
Rocks & Minerals
36 rocks across the three families and 60 common minerals with full chemistry, plus an interactive Mohs hardness lab, rock cycle animator, identification key, drills, mystery, and a daily challenge.
DNA & Genetics
Interactive double helix, full 64-codon table, transcription/translation engine with preset sequences (insulin, GFP, β-globin), Punnett squares, inheritance patterns, mutation explorer.
Biomes & Climate Zones
12 biomes painted on a world map, 18 Köppen-Geiger codes with example cities, 24 city climographs, food webs for four biomes, and drills.
Weather & Atmospheric Science
Atmosphere layers cross-section, all 10 cloud genera, fronts and pressure systems, deep dives on thunderstorms / hurricanes / tornadoes, forecast sandbox, atmospheric optics.
Geology & Plate Tectonics
Plate map of the major + minor tectonic plates, six boundary cross-sections, 25-quake catalog, volcano types and VEI, geologic time column, continental drift animator.
Study Skills & Meta-Learning
How to learn — the techniques that compound across every other subject.
🎯 Study Hub — your control center
Cross-module streak, daily mission across all 5 modules, personal SM-2 review deck of starred flashcards, 25-question cross-module final exam, and a printable 4-week teacher course pack.
Memory Techniques
Method of Loci memory-palace builder, Major System digit-to-word encoder, chunking lab, drills, flashcards, daily challenge.
Spaced Repetition Principles
Forgetting-curve simulator, Leitner-box visualizer, SM-2 walkthrough, quizzes, flashcards, daily puzzle.
Active Recall Methods
Roediger–Karpicke comparison, blurting trainer with timer, Q-card lab, retrieval drill, flashcards, daily challenge.
The Feynman Technique
4-step explain-it-simply workbench (auto-saves), jargon spotter, three worked examples, flashcards, daily Feynman pass.
Note-Taking Systems
Live Cornell template, mind-map builder, six systems compared, flashcards, daily pick-the-right-system challenge.
Test Prep
Targeted practice for the standardized tests that gate the next door.
Test-Prep Hub
Cross-module streak, SM-2 review deck, 25-question final exam, 20-question timed Reading sim, teacher course pack.
SAT Vocabulary
515 high-frequency SAT words across five difficulty tiers with quizzes, flashcards, matching game.
SAT/ACT Math Patterns
50 problem patterns with worked examples, tactics, and drills across algebra, data, advanced math, geometry.
Reading Comprehension Drills
14 SAT/ACT-style passages with main idea, inference, vocabulary, function, and evidence questions.
GRE Vocabulary
400 high-frequency GRE words across five tiers with quizzes, flashcards, and adaptive review.
AP Biology
80 high-yield concepts across the four College Board Big Ideas with quizzes, flashcards, and worksheets.
AP US History
80 high-yield concepts across four eras (Colonial → Modern) with quizzes, flashcards, and worksheets.
AP Calculus AB
80 high-yield concepts with KaTeX-rendered math across limits, derivatives, applications, and integrals.
AP English Lang
80 high-yield concepts across rhetorical situation, argument & reasoning, style, and essay formats.