The lesson

You don't watch a lesson. You play through it.

Press play and step through a real 6-mode lesson — right here, on this page.

Read · 40 sec

What is a company worth?

It's worth the cash it'll generate in future — but money later is worth less than money now. So we discount it back to today.

Tap Next — watch the idea become a picture.

Diagram · auto-drawn

$10M a year, discounted

Drawn to match the sentence above — not a stock image.

Video · 22s clip
▶ Play the micro-clip

Seconds, hand-picked — not a 45-minute lecture.

Interactive · drag it
Rate
10%
Value
$100M

Drag it — feel risk and value move together.

Lab · type real input
valuation.py — your turn
earnings = 10
rate     =  # try 0.08
value    = earnings / rate
→ press Run
Voice · talk out loud
🔊 Tap the mic and ask me anything.

Six modes, one flow

The engine picks the right mode for each idea — hover any card.

Read

One idea at a time, at your level.

Diagram

Drawn to match what you just read.

Video

Short, relevant clips — never filler.

Interactive

Feel a concept move, don't memorise it.

Hands-on lab

Produce something; get graded instantly.

Voice tutor

Talk out loud; it answers out loud.

Top 2%
A personal tutor with feedback lifts the average learner into the top 2% of a class
Bloom · The 2 Sigma Problem, 1984
+0.47σ
Exam-score gain from active learning over lecturing, across 225 studies
Freeman et al., PNAS 2014
55%
Higher failure rate for students in passive lectures
Freeman et al., 2014

The best way to understand it is to feel it.