Most tools tell you the right answer. Mia finds the faulty thinking behind your answer, rebuilds it, and checks that it sticks.
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Welcome back. Last session we started Economics as a Social Science — we did one exchange and didn't finish. Today we're continuing that lesson, which appears on Papers 1 and 2 for your SL exam.
Economics is a social science. That means it studies human behaviour and decision-making in society. The fundamental problem it solves: we have unlimited wants, but limited resources.
This fact — called scarcity — forces every economic decision. Every choice involves giving up something else. That trade-off is your opportunity cost.
You're right — let me slow down.
Economics is the study of choice under pressure. You want loads of things. You can't have everything. So you have to pick.
Mia spots the faulty thinking behind a wrong answer, rebuilds the model, then retests it until the mistake stops repeating.
Here's the faulty model: you're treating legal structure as a profit guarantee. It isn't. Legal structure changes ownership, liability, control and access to finance — not profit. Profit depends on business performance.
The IB-strong version: becoming a private limited company can help raise capital while keeping ownership relatively controlled — but it adds admin and legal obligations. So the judgement depends on whether the business needs growth capital more than simplicity.
Now — give me one reason a sole trader might deliberately stay a sole trader.
Most tools correct the answer. Mia corrects the thinking that produced it — and brings the weak point back until it sticks.
Mia teaches the topic at the level your paper requires.
You don't just read notes, you write.
Mia identifies the faulty thinking behind your answer.
She corrects the concept, shows the diagram or structure, and explains what examiners reward.
The weak area comes back until you stop making the same mistake.
Diagnosis alone is feedback. Diagnosis plus retesting is how you actually stop losing the marks.
Try a real IB lesson. Watch Mia diagnose a wrong answer, rebuild it, and test the next step — no account needed.
The thing examiners actually grade you on — and the thing generic AI tutors often get wrong. Mia draws to IB conventions, then marks against the official criteria. You can also upload a photo of a diagram you've drawn on paper and get it marked the same way.
No more piecing together five tutors, three textbooks and a YouTube playlist. Gradd is the full Economics and Business Management course, taught and marked to IB standards, in one place.
Micro, macro, global, development for Econ. Strategy, marketing, finance & ops for BM. HL and SL extensions, at the depth IB actually expects.
Mia works through Paper 1, 2 and 3-style questions with you in session — command terms, diagram marking — graded against the official IB markbands and assessment criteria, not generic AI hand-waving.
Ask anything, any time — drawing diagrams, working questions, making sense of an exam question worded to trip you up.
Both subjects taught at HL and SL, with the depth the IB command terms actually require.
Search and jump to any topic across the full course — 210 Economics and 136 Business Management lessons, in any order.
A real-time dashboard view built for parents. No more “did you study today?” guesswork — you'll see where they are, what they've struggled with, and whether they're on pace for their exams.
Parents don't just see activity. They see the topics and skills Mia keeps having to rebuild — and whether they're changing.
You're at a 6 and you want the predicted that gets you into LSE. Gradd gives you the kind of feedback most students only get from an excellent private tutor — whenever you need it.
Catch up without anyone knowing. Mia won't sigh. Mia won't bill your parents €90 an hour. Start at the topic you fell off and rebuild.
Online IB students, anticipated candidates, or just a school where Business isn't offered. The full Economics and Business Management course, structured, in your pocket.
Same coverage. Better depth. 1/40th the price.
Student answer
“A subsidy lowers price and increases demand.”
The misconception
“You're confusing demand with quantity demanded. The demand curve doesn't shift — the subsidy shifts the supply curve right, lowering price and raising quantity.”
Rebuilt answer
“A subsidy reduces producers' costs, shifting supply right. Price falls from P1 to P2 and quantity rises from Q1 to Q2. The size of the effect depends on PED and PES.”
There's no shortage of ways to prepare for IB Economics or IB Business. Here's how Gradd actually stacks up against what most students do — at a fraction of the price, with feedback the second you finish writing.
| Gradd | Private tutor | Group classes | Self-study | |
|---|---|---|---|---|
| Cost | €44.99 / month | €60–€120 / hour | €25–€45 / hour | Free–€120 (books) |
| Full syllabus, HL & SL | ✓ Both subjects, every topic | Depends on tutor | Cohort-paced | You decide |
| Past-paper-style questions | ✓ Unlimited, on demand | Homework from textbooks | Generic worksheets | Limited to what you find |
| Diagnoses your misconceptions | ✓ | Depends on tutor | ✗ | ✗ |
| Retests weak thinking until it sticks | ✓ | Limited by session time | ✗ | ✗ |
| Diagram marking | ✓ Instant, IB criteria | If you book a session | Rare | Not available |
| IB-standard marking | ✓ Command terms + markbands, instant | Varies by tutor | Generic | Not available |
| Marking turnaround | Seconds | 3–7 days | 1–2 weeks | You mark yourself |
| Availability | 24/7 | 1–2 hours / week | Fixed schedule | Whenever |
| Tracks your progress | ✓ Adaptive to your weak areas | In the tutor's head | Not available | Not available |
Most students stitch two or three of these together — a tutor for the hard bits, group classes for the social side, self-study for everything else. Gradd does the work of all three, every day, in your pocket.
Free, no card: unlimited questions, instant marking, and your first teaching moments with Mia — the real product, not a trial.
IB Economics + IB Business Management. Everything, one subscription.
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