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

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
Tracing snapshot for print
Tip: After you trace words like price or total, write a short money sentence such as "The total is $3." and draw a tiny coin or price tag to match.

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?

A price tag shows the cost of an item.

2) Which price is cheaper?

$1 is the smallest amount of money.

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

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

4) Which word means an item costs more money?

Expensive means it costs a lot of money.

5) Who is the customer in a shop?

The customer is the person who buys items.

6) Who is the shopkeeper?

The shopkeeper sells items and takes the money.

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

$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 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 + $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?

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 make a total of $2.

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

$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?

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?

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

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

These words help us talk clearly about money and shopping.

Assessment (parent/teacher)

Exit ticket (student)

Next time I will practise…

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