TRAIN FOR IT.
Every day until exam day.

A-Level Maths and Sciences, coached by Dr Lavan.
On iPad, phone and the web.

trayna.co.uk/learn
03:05 / 07:50
Carbohydrates: disaccharides
BIOLOGY · TUTORIAL 2 OF 5
NOTES
Maltose: the glycosidic bond
  • α-glucose + α-glucose
  • Condensation: water removed
α-1,4 glycosidic bond
  • Hydrolysis: water added, the bond breaks
PRINT QUESTIONS
4 MARKSDIFFICULTY 3Solve 4x2/3 − 9 = 0, giving each answer as an exact fraction.
Handwritten working: 4x to the two thirds equals 9, so x to the two thirds equals 9 over 4, so x equals 9 over 4 to the power three halves, equals 3 over 2 cubed, equals 27 over 4
× Answer: 27/8
Check my writingRead: x = 27/4Continue
WK 11 · THURSDAY 22 OCTOBER◇ 1
Good afternoon
240 minutes · Physics first
Why this now: your school covered it this week, so it is taught first.
0/35STEPS240 minLEFT TODAY
NEXT UP · PHYSICS · FORCES
Watch: Scalars & vectors
5 videos · 17 min
Start →
PHYSICSFRI 21 MAY
Force, Energy and Momentum
01·WATCH
Scalars & vectors · 5 left
02·PRACTISE
Resolving forces · 2 left
How do I…
TodayPathTopicsProgressYou
WEB · WATCH AND READTABLET · WRITE AND PRACTISEPHONE · ON THE GO
01

Your coach

Dr Lavan Ganeshkumar. PhD in computational chemistry, UCL. Over ten years teaching A-Level STEM. He opens your first session and closes every one after it.

02

Ask it your way

The plan tells you what to do today. When you are stuck on something else, ask. Type a question and Dr Lavan’s tutorial, his notes and the exam questions for that topic come up together: watch it, read it, then practise it.

Illustrative. Every topic has its tutorial, its notes and its questions behind the same search.

03

How it works

A plan for every day, in four steps. A topic you keep missing comes back sooner.

01 · LEARN18 MIN
Physics · ParticlesAQA 7408
p → n + e⁺ + νₑQ+1 → 0 + 1 + 0B+1 → 1 + 0 + 0Lₑ 0 → 0 − 1 + 1PLAYINGDR LAVAN · PARTICLES 1/4
Quarks and leptons
Antiparticles
Exchange particles
Feynman diagrams
01LEARN

Bite-sized chunks

Each concept is a short video from Dr Lavan and its notes: a chunk map you clear one piece at a time, never a 40-minute lecture.

4 VIDEOS · 1 NOTE · 18 MIN
01 · LEARN18 MIN
Physics · ParticlesAQA 7408
p → n + e⁺ + νₑQ+1 → 0 + 1 + 0B+1 → 1 + 0 + 0Lₑ 0 → 0 − 1 + 1PLAYINGDR LAVAN · PARTICLES 1/4
Quarks and leptons
Antiparticles
Exchange particles
Feynman diagrams
02RECALL

Memory that holds

Spaced-repetition cards resurface everything you have ever covered, right before you would have forgotten it. Nothing gets quietly dropped.

24 CARDS · SPACED REPETITION
02 · RECALL7 OF 24
Chemistry · BondingAQA 7405
Name the shape of NH3 and give its bond angle.TAP TO REVEAL
AGAINHARDGOODEASY
DUE AGAIN IN 6 DAYS
03PRACTICE

Questions, marked

Graded sets marked against the mark scheme. Every attempt feeds your mastery map, and a topic you keep missing comes back sooner.

8 QUESTIONS · MARKED
03 · PRACTICEQ4 OF 8
Biology · Biological moleculesAQA 7402
Which bond joins two glucose molecules to form maltose?
✓Glycosidic
×Peptide
Ester
Hydrogen
MASTERY +4
04APPLY

Exam conditions

One exam-style question, timed and marked to the mark scheme. This is the step that turns understanding into the grade.

6 MARKS · 8 MIN · TIMED
04 · APPLY08:00
Mathematics · DifferentiationEDEXCEL 9MA0
EXAM-STYLE QUESTIONThe curve C has equation y = x³ − 3x² + 4. Find the stationary points and determine their nature.6 MARKS
MARK SCHEME
✓Differentiates to 3x² − 6x
✓Solves dy/dx = 0 for x = 0 and x = 2
Uses d²y/dx² to classify each point
  1. 01

    Learn

    Short video tutorials and notes from Dr Lavan.

  2. 02

    Recall

    Spaced-repetition cards, just before you would forget.

  3. 03

    Practice

    Questions marked against the mark scheme.

  4. 04

    Apply

    Exam-style questions, timed.

04

The path

Every week to your last paper is planned. Add your mocks and results, and the weeks ahead redraw.

WEEK 28 OF 40EXAMS
FoundationsMasteryPrecision
05

Subjects

Built against the specification you sit. Maths on Edexcel, the sciences on AQA.

06

Start training

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