# Lesson 109: Buying and selling in a mini shop

🧮 MATH (40 Lessons) • 🟣 D. Data and Money

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## Objective

I can read simple price tags and talk about buying and selling in a mini shop. I can use words like cheap, expensive, more, and less. I can find a small total when I buy one or two things with pretend money.

## Materials

- Small classroom items: pencils, erasers, small toys, stickers
- Paper price tags with simple amounts (for example: $1, $2, $3, $5)
- Pretend coins or notes (or paper circles/rectangles with $1, $2, $5 written)
- Paper or mini whiteboards for writing small totals

## Mini-lesson — Prices, buying, and selling

In a shop, every item has a price. The price tells us how much money we need to buy it.

Price tags

- A price tag shows how much something costs.
- We write money with a $ sign in front of the number.
- For example: $1, $2, $5.

Cheap and expensive

- If something costs little money, we say it is cheap.
- If something costs more money, we say it is expensive.
- We can compare: one toy can be cheaper or more expensive than another toy.

Buying and selling

- The customer is the person who buys.
- The shopkeeper is the person who sells.
- To buy something, the customer pays the price with money.

Finding a small total

- If you buy one item, the total is just that one price.
- If you buy two items, you can add the two prices.
- For example: a pencil costs $1 and a sticker costs $2. The total is $3 (1 + 2).

In this lesson, we use simple prices and small totals so that buying and selling feels like a fun mini shop game.

Picture strip: Mini shop shelf and counter.

Mini shop shelf

Customer and coins

## Guided Practice — Mini shop role-play with tracing pad

You will play a mini shop game with a friend, family member, or classmate. Take turns being the customer and the shopkeeper, then use the tracing pad to write and draw what you did.

1. Set up your mini shop: Choose 3 or 4 small items (for example: a pencil, eraser, toy car, sticker). Give each one a simple price tag like $1, $2, or $3.
2. Choose your money: Take pretend coins or notes that match the prices (for example: three $1 coins).
3. First round: The customer picks one item to buy and reads the price out loud (for example, "This costs $2").
4. Pay and check: The customer counts out the money. The shopkeeper checks that it matches the price tag.
5. Second round: The customer chooses two items and adds the prices to find the total. For example: $1 + $2 = $3.
6. On your paper: Write one short sentence about your shop, such as "The pen is cheap." or "The game is more expensive.".
7. Use the tracing pad: Trace two money words (for example, price and total) and draw a tiny price tag next to each word.

Tracing Pad
Lines
Trace
Pen

## Practice 1 — Reading price tags

[PLACEHOLDER PRACTICE 1]

## Practice 2 — Buying one or two items

[PLACEHOLDER PRACTICE 2]

## Practice 3 — Cheap, expensive, and good choices

[PLACEHOLDER PRACTICE 3]

## Quick Check — Buying and selling in a mini shop

Answer each question about prices, cheap and expensive, and small totals. You may look back at the mini-lesson.

1) What does a price tag tell you?

How many pages are in a book How much money something costs What color the item is
A price tag shows the cost of an item.

2) Which price is cheaper?

$1 $4 $7
$1 is the smallest amount of money.

3) The price tag on a toy car says $3. How much does it cost?

$1 $2 $3
The number on the tag is the cost, so the car costs $3.

4) Which word means an item costs more money?

cheap expensive empty
Expensive means it costs a lot of money.

5) Who is the customer in a shop?

The person who buys things The person who sells things The person who cleans the floor
The customer is the person who buys items.

6) Who is the shopkeeper?

The person who only looks at the window The person who makes the toys at home The person who sells items in the shop
The shopkeeper sells items and takes the money.

7) A pencil costs $1 and a rubber costs $2. Which one is more expensive?

The pencil The rubber They cost the same
$2 is more than $1, so the rubber is more expensive.

8) A sticker costs $1 and a toy car costs $3. Which is cheaper?

The sticker The toy car They cost the same
The sticker has the smaller price, so it is cheaper.

9) You buy a pen for $2 and a notebook for $3. What is the total?

$2 $4 $5
$2 + $3 = $5, so the total is $5.

10) You want to buy a sticker that costs $1. You have one $1 coin. Do you have enough money?

No, you need more money Yes, you have exactly enough You need three more coins
One $1 coin is exactly the price of the sticker.

11) A small toy costs $2. Which pair of coins could you use to pay the exact price?

Two $1 coins One $1 coin and one $2 coin Three $2 coins
Two $1 coins make a total of $2.

12) A ball costs $4 and a book costs $5. Which sentence is true?

The ball is more expensive than the book. The book is more expensive than the ball. They are the same price.
$5 is more than $4, so the book is more expensive.

13) In the mini shop, which price would you most likely see on a tiny eraser?

$20 $100 $1
For a small classroom eraser, $1 is a simple and sensible price.

14) You buy a pencil for $1 and a sticker for $1. How much do you spend in total?

$2 $1 $3
$1 + $1 = $2, so the total is $2.

15) Why do we use money words like price, cheap, and total?

To tell the weather To talk clearly about buying and selling in a shop To name all the colors in the classroom
These words help us talk clearly about money and shopping.

## Assessment (parent/teacher)

Student can read simple price tags in dollars for classroom items. Student can use the words cheap and expensive to compare items. Student can identify who is the customer and who is the shopkeeper in a mini shop. Student can find a small total when buying one or two items with simple prices. Student can talk about buying and selling using money words like price and total.

## Exit ticket (student)

😀 I can read prices and play mini shop games easily. 🙂 I can read prices and add small totals but still need more practice. 😅 Money and mini shop games still feel tricky for me.

#### Next time I will practise…

Reading price tags on classroom items Saying which item is cheap or expensive Adding two prices to find a small total
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