Learn freely, with no questions and no clock.
The Explorer is the part of the library you wander through. Tap a country, a bone, an element or a date: Voyelle tells you what it is and shows you the cards that help it stick.
Six ways to explore.
Maps
The world's 197 countries and their capitals, France's 101 départements, the 50 US states. Zoom in, tap, read.
The 3D skeleton
199 bones to turn and tap, from the skull to the phalanges, or to find by name.
Boards
The periodic table, the times table, the genetic code, and alphabets: hiragana, katakana, Hangul, Cyrillic, Greek, and Morse with sound.
Timelines
French history, the presidents of France and of the United States, geological time, read level by level.
Protocols in action
TCP, DNS, TLS, HTTP, OAuth… Start a protocol, pause it, step through it message by message, trigger a fault.
The architecture sandbox
Servers, cache, load balancer: raise the load, switch a part off, see what holds.
Every Explorer.
Each one leads to the decks that help you review it.
Health and medicine
The body in motion
Bones, muscles and moving joints
Review :Anatomical terminologyAnatomy — Bones of the skeletonThe vertebrae and the spine
OpenThe body at work
Intensity, duration and every variable live
Review :Skeletal striated muscleExcitation-contraction couplingMuscle fibre types
OpenThe nervous system lit up
Reflex, command, lesions
Review :The neuron and the synapseThe brain: lobes and structuresThe 12 cranial nerves
OpenThe skeleton
199 bones in 3D
Review :Anatomy — Bones of the skeleton
Open
Sport
The ballistics lab
Speed, angle, height and range
Review :Quantities and unitsLinear kinematicsAngular kinematics
OpenFrom Olympia to Paris 2024
Olympia and 30 Olympiads
Review :The games of AntiquityCoubertin and OlympismThe great Olympic Games
OpenThe space of sports
Economic and cultural capital
Review :The authors of the sociology of sportThe civilising process and sportThe space of sports and distinction
OpenThe learning lab
Arousal and practice conditions
Review :Children's motor developmentPiaget, Wallon and Vygotsky applied to movementAdolescence and sport
OpenWho runs sport
The State, the sports movement, local authorities
Review :How sport is organised in FranceSports federationsThe Olympic movement
OpenThe season planner
Fitness, fatigue and taper (Banister)
Review :The principles of trainingTraining loadSupercompensation and recovery
OpenThe variables gym
Space, time, opposition, target
Review :The French PE curriculumTeaching approachesTeaching PE: didactics
OpenThe fields
Seven official fields, zone by zone
Review :Athletics: running, jumping and throwingSwimming: the four strokes and their rulesArtistic gymnastics: apparatus and the code of points
OpenThe first aid tree
Protect, examine, call, rescue
Review :First aid (PSC1)Sports injuriesPreventing injuries
Open
Mathematics
The scatter plot
Correlation, regression, sample
Review :Descriptive statisticsCorrelation and regressionStatistical distributions and tests
OpenThe times table grid
100 products
Review :Times tables
Open
History and geography
The world
197 countries
Review :Countries of the worldCountries of AfricaCountries of the Americas
OpenFrance
101 départements
Review :French départements
OpenThe United States
50 states
Review :The 50 US states
OpenThe French history timeline
52 dates, dynasties and regimes
Review :Key dates in French historyPresidents of the French Fifth Republic
OpenPresidents of the Fifth Republic
8 presidents
Review :Presidents of the French Fifth Republic
OpenPresidents of the United States
47 presidencies
Review :Presidents of the United States
Open
Earth and space sciences
The geologic timeline
539 million years
Review :The geologic time scale
Open
Computing and tech
- Open
Protocols in action
TCP, DNS, TLS, HTTP, OAuth…
- Open
The architecture sandbox
Servers, cache, load balancer
The test bench
Cost class, size and machine
Review :Complexity classesAnalysing loops and recurrencesCode metrics
OpenThe Git sandbox
Real commands, three areas and a graph
Review :Compile-time, run-time and logic errorsThrowing, catching and propagating an exceptionChecked and unchecked exceptions
OpenThe client interview
Five clients, five specifications
Review :Functional and non-functional requirementsRequirements elicitationThe actors of a system
OpenThe terminal
A Linux machine to drive
Review :The operating system: role and familiesKernel, drivers and user spaceHow a system boots
Open
Physical sciences
The periodic table
118 elements
Review :Understanding the periodic tableChemical symbolsSymbols → elements
Open
Languages
Hiragana
104 kana
Review :Hiragana
OpenKatakana
104 kana
Review :Katakana
OpenHangul
40 letters
Review :Hangul, the Korean alphabet
OpenThe Cyrillic alphabet
33 letters
Review :The Cyrillic alphabet
OpenThe Greek alphabet
24 letters
Review :The Greek alphabet
OpenMorse code
36 signs, with sound
Review :Morse code
Open
Life sciences
The genetic code
64 codons
Review :The genetic codeThe 20 amino acids
Open
And after a mistake?
In a session, “Understand” opens the Explorer already centred on what you were looking for: the map framed on the country, the bone lit up, the element picked, the timeline opened down to the date. Then you pick up the session where it was.
The whole world fits in an Explorer.
Free: the whole library, unlimited reviews, no ads. See pricing