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Fun at Class Party! (Smart Party Snack Data & Bar Chart Station)

Source:

Scan NFC party snack cards (Samosa, Jalebi, Juice, Fruity) to build a live class party order. An OLED screen draws real-time bar graphs while 4 NeoPixel LED strips display vertical frequency bars.

Categorisation

Props & Materials Required

  • •Party snack cards with NFC tags (Samosa, Jalebi, Juice, Fruit)
  • •ESP32 controller board
  • •PN532 NFC reader module
  • •4x NeoPixel LED strips (10 LEDs each)
  • •0.96-inch OLED display screen
  • •DFPlayer Mini MP3 module + 3W speaker

Step-by-Step Instructions

1

Scan Student Snack Orders

Each student scans their favorite party snack card on the NFC reader.

2

Live Bar Chart Building

Scanning Samosa lights up +1 LED on the Samosa strip. OLED screen draws a bar graph.

3

Analyze Party Totals

After 20 scans, press 'Summary'. Speaker announces: 'Party Order: 8 Samosas, 5 Jalebis, 4 Juices, 3 Fruits!'

4

Data Interpretation Quiz

Speaker asks: 'How many MORE students chose Samosas than Juices?' Child calculates 8 - 4 = 4 → Inputs 4 on button pad!

Why It Works & Notes

Planning a class party involves real data collection. Scanning snack cards and watching real-time bar graphs grow on an OLED screen connects survey data with bar chart interpretation.