Stemoto LogoStemoto
Back to Directory

Vegetable Farm Harvest (Addition & Subtraction to 20)

Source:

A pretend play vegetable farm where children harvest NFC-tagged vegetables, scan them at a smart checkout, and the speaker totals the harvest and calculates change.

Categorisation

Props & Materials Required

  • •Plastic/felt vegetables (carrots, potatoes, tomatoes) or paper cutouts
  • •2 small wicker baskets
  • •Play money or tokens
  • •Chalkboard for recording numbers

Step-by-Step Instructions

1

Harvest Vegetables

Pick 8 carrots and 5 tomatoes from the farm grid and place them in the harvest basket.

2

Scan at Smart Checkout

Tap each NFC-tagged vegetable on the reader. Speaker announces: 'Carrot added! Total: 1... 2... 3...' until all are scanned.

3

Sell at Market (Subtraction)

A customer buys 4 carrots. Tap 4 carrots on the 'SOLD' reader. Speaker says: '13 minus 4 equals 9 vegetables remaining!'

4

Receipt Display

The OLED display shows a mini receipt: '8 Carrots + 5 Tomatoes = 13 Total. Sold: 4. Remaining: 9.'

Why It Works & Notes

Contextualizing math inside a farm/market story transforms abstract operations into practical problem solving. NFC checkout scanning adds a real-world retail technology experience.