The lessons
Every rung of every ladder opens with a short lesson. They are all here, in the order they are climbed.
Maths21 rungs
French24 rungs
- What isn't pronounced
- Accents and spelling
- Liaison and elision
- Articles and gender
- Adjectives: gender, number and position
- Present tense
- Negation: ne… pas
- Prepositions and contractions
- The partitive: du, de la, des
- C'est, il y a and questions
- A1 vocabulary
- A2 vocabulary
- B1 vocabulary
- False friends
- Object pronouns
- Passé composé
- Simple future and futur proche
- Reflexive verbs
- The pronouns y and en
- Relatives: qui, que, dont, où
- Imparfait against passé composé
- Conditional and politeness
- Subjunctive
- Odd one out
Japanese26 rungs
- Level zero
- Hiragana
- Katakana
- Greetings and set phrases
- It is this: X は Y です
- Particles: は, が, を, に, で
- Verbs: ます, negative and past
- い and な adjectives
- Particles: と, も, から, まで, へ
- Counters and quantities
- N5 vocabulary
- Odd one out
- N4 vocabulary
- N3 vocabulary
- N5 kanji
- N4 kanji
- N3 kanji
- The て form
- Dictionary form and plain style
- Adjectives: past, linking and adverbs
- Potential, volitional and wanting
- Transitive and intransitive pairs
- Giving and receiving: あげる, くれる, もらう
- Conditionals: と, ば, たら, なら
- Passive and causative
- Politeness: 尊敬語 and 謙譲語
Astronomy12 rungs
Physics23 rungs
Geography12 rungs
Chemistry24 rungs
- What everything is made of
- The periodic table
- Inside the atom
- Bonds
- Formulas and names
- The shape of molecules
- Reactions and balancing
- The mole and the sums
- Solutions and gases
- Acids and bases
- Oxidation and reduction
- Carbon chemistry
- Separating mixtures
- Water, the solvent
- The carbon cycle
- Reactions that give and take heat
- Air, water and soil
- Carbohydrates, proteins and fats
- Materials and their life cycle
- Chromatography and titration
- Limiting reactant and yield
- Reaction rate
- Batteries and electrolysis
- Chemical equilibrium
Music14 rungs
History10 rungs
Biology23 rungs
- The cell
- Membranes & transport
- Energy & metabolism
- Classifying life
- How biology is investigated
- Plants and fungi
- DNA & genes
- Inheritance
- Gene expression
- Genetic engineering
- Heritable variation
- Natural selection
- Population change
- The origin of life
- Food webs
- Populations & resources
- Cycles of matter
- Biodiversity and our impact
- How you live and how you feel
- Viruses, bacteria and contagion
- Reproduction and sexuality
- The body's defences
- Hormones and nerves