Project: card rules

Card rules on one sheet

A Banker project: a sheet of rules, not a card in your wallet against a will. Who enters a PIN, what the pocket-money ceiling is (not necessarily a bank limit), QR read a name, a lost-phone sentence, no photos, no chat.

When you have no card, the sheet still holds: “there is no card, pocket money coins, a phone with no payment.” That is a rule. It holds.

Filip writes a PIN onto the sheet “so we do not forget”. Eliška a sheet with no PIN, with sentences. Mum signs Eliška. Filip’s sheet is a key under a doormat. The course takes Eliška.

The sheet is a lock of words

Rules cut fights at a till. It is not a contract from a law office. It is “this is how it is with us”.

A pocket-money limit on the sheet: 80 a week, even when a card can 500. An envelope.

Who may a game purchase: always a parent. A saved card: switch off, when it goes. A parent chooses that.

The sheet changes when something happens (a PIN leak). A date on the sheet.

Eliška wants to shorten it to “it will be fine somehow”. Filip asks what the lesson Project: card rules is for, when a table can do a sum. A sum does not count respect, a PIN, a trap or an envelope. The core is: Card rules are sentences with a parent. Keys do not belong on the sheet.

Adults pay the rent. The card, the account and the PIN belong to a parent. A child’s email does not belong here. Pocket-money numbers do not belong on the network. If you break these rules in the lesson “Project: card rules”, you know a word, not the course.

Eliška’s sheet: 1) a PIN only mum 2) pocket money 80 3) QR a name 4) a loss sentence 5) no photo 6) a game = hand over a phone. Filip: PIN 1234. An anti-project.

Practice numbers, not a bank statement. Eliška has 80 Kč in the want envelope. Filip pushes a step this lesson can name. When Eliška uses the core, either it waits for a parent, or it fits the envelope. If not, anger and a hole are left — proof of pressure, not that the lesson is pointless.

Why this right now

You are in the course Money with Martin, level Banker. You can write numbers in a notebook or a table, but the topic is money and decisions, not Excel formulas. The account, the card and the PIN belong to a parent. A child’s email does not belong here. Do not put pocket-money numbers on the network.

This is not the Sheets with Martin course. A table may help, but the mark of success is a decision, not SUM.

You will know this lesson by one sentence: Card rules are sentences with a parent. Keys do not belong on the sheet. When you can say it to a parent or a teacher, you have the core. The rest is practice, not magic.

Report a loss uses the sheet: you know you must say about a card. With no sheet it is forgotten that a phone paid.

If you skip this, the next lesson in level Banker will stand on fog. A sheet exists, a PIN on it does not. A parent heard the sentences. It is not a test for marks. It is a safety net, so “Project: card rules” is not only a heading.

Four things you will build from the course

The course has four small projects. You do not have to do them all at once. Today you add only what this lesson can do.

Workshop: six sentences, no PIN

Write. Read to a parent. Sign. Hide.

1. Six sentences. A check: no PIN, IBAN, CVC.

2. A pocket-money ceiling in a word or a number you may.

3. A loss sentence from last time.

4. A date. A parent’s signature. No photo of the sheet onto the network.

You count with sentences. A key on paper = burn it. Boredom of the sheet is success.

Pocket money: Pocket money: a ceiling from the sheet = an envelope, not a bank limit. Do not write someone else’s amount, a PIN, an IBAN or “how much a classmate gets” next to it. A rule and a practice number are enough — or an honest zero.

Class trip: A trip: a till card is not on your sheet. Apart a teacher. Do not write someone else’s amount, a PIN, an IBAN or “how much a classmate gets” next to it. A rule and a practice number are enough — or an honest zero.

Game shop: A game: the point “hand over a phone”. Do not write someone else’s amount, a PIN, an IBAN or “how much a classmate gets” next to it. A rule and a practice number are enough — or an honest zero.

Stall: A stall: do not take stranger cards by your sheet. A teacher. Do not write someone else’s amount, a PIN, an IBAN or “how much a classmate gets” next to it. A rule and a practice number are enough — or an honest zero.

What to tell a parent with no wage and no account number: “Today I went through project: card rules — Card rules are sentences with a parent. Keys do not belong on the sheet.” If they have no time, a slip in the notebook is enough. Stories and class chat are not enough.

Six sentences with no keys. If you cannot see this, let the next lesson wait. It is not shame. It is a hole in the chapter, not in you.

A parent knows the sheet. If you cannot see this, let the next lesson wait. It is not shame. It is a hole in the chapter, not in you.

A card need not exist — the sheet still holds. If you cannot see this, let the next lesson wait. It is not shame. It is a hole in the chapter, not in you.

Practice: a rule, or a key?

What onto the sheet?

1. PIN 4580. No why?

2. “A parent enters a game.” Yes?

3. A bank limit 500 vs. pocket money 80. Which onto the sheet as a spending ceiling?

4. A photo of the sheet into class. Why not?

Now you 💪

Go through three checks. By each one, tick in your head: do I see it, or not?

1. Six sentences with no keys.
2. A parent knows the sheet.
3. A card need not exist — the sheet still holds.

If something is missing, go back to the steps above. It is not a test for marks. It is a safety net, so you go on with certainty, not with a mess.

What to take from this lesson

• A project = sentences, not plastic in a pocket against a will.
• An envelope ≤ a bank limit.
• Keys off paper.
• A date when rules change.
• 名前s in the examples (Eliška, Filip) are made up. Do not put your number, email or photo here.
• Next lesson: When you can do this, go to the next lesson in the same level.

© 2026 Ing. Martin Polak / AlgoRhino · コンテンツ利用規約