codex-lv2-may-2025

✅ Activity: ASCII Emoji Binary Decoder

Overview

In this activity, you will:

  1. Use an ASCII chart represented with emoji for binary digits.
  2. Decode sample binary emoji sequences into text.
  3. Create and encode their own message using the emoji binary format.
  4. Share your message for classmates to decode.

This lesson is derived from Unit 5 Lesson 3

First, follow the activity sheet and solve the challenge puzzles.

Use the ASCII Reference as reference.

Use your copy of this sheet from Lesson 2 for your work. Move to the Tab called “ASCII Encoding” and create your own code and messages there. Choose your own emojis to represent the ON and OFF positions in binary.

✅ Emoji Binary Key

For example, the binary number 01000001 for the letter A would be written:

 🍎🍌🍎🍎🍎🍎🍎🍌

✅ Decode These Example Messages

Letter Decimal Binary Emoji Binary
A 65 01000001 🍎🍌🍎🍎🍎🍎🍎🍌
B 66 01000010 🍎🍌🍎🍎🍎🍎🍌🍎
C 67 01000011 🍎🍌🍎🍎🍎🍎🍌🍌
D 68 01000100 🍎🍌🍎🍎🍎🍌🍎🍎
E 69 01000101 🍎🍌🍎🍎🍎🍌🍎🍌
F 70 01000110 🍎🍌🍎🍎🍎🍌🍌🍎
G 71 01000111 🍎🍌🍎🍎🍎🍌🍌🍌
H 72 01001000 🍎🍌🍎🍎🍌🍎🍎🍎
I 73 01001001 🍎🍌🍎🍎🍌🍎🍎🍌
J 74 01001010 🍎🍌🍎🍎🍌🍎🍌🍎
K 75 01001011 🍎🍌🍎🍎🍌🍎🍌🍌
L 76 01001100 🍎🍌🍎🍎🍌🍌🍎🍎
M 77 01001101 🍎🍌🍎🍎🍌🍌🍎🍌
N 78 01001110 🍎🍌🍎🍎🍌🍌🍌🍎
O 79 01001111 🍎🍌🍎🍎🍌🍌🍌🍌
P 80 01010000 🍎🍌🍎🍌🍎🍎🍎🍎
Q 81 01010001 🍎🍌🍎🍌🍎🍎🍎🍌
R 82 01010010 🍎🍌🍎🍌🍎🍎🍌🍎
S 83 01010011 🍎🍌🍎🍌🍎🍎🍌🍌
T 84 01010100 🍎🍌🍎🍌🍎🍌🍎🍎
U 85 01010101 🍎🍌🍎🍌🍎🍌🍎🍌
V 86 01010110 🍎🍌🍎🍌🍎🍌🍌🍎
W 87 01010111 🍎🍌🍎🍌🍎🍌🍌🍌
X 88 01011000 🍎🍌🍎🍌🍌🍎🍎🍎
Y 89 01011001 🍎🍌🍎🍌🍌🍎🍎🍌
Z 90 01011010 🍎🍌🍎🍌🍌🍎🍌🍎

1.

🍎🍌🍎🍎🍎🍎🍎🍌 🍎🍌🍎🍎🍎🍎🍌🍎 🍎🍌🍎🍎🍎🍎🍌🍌

Hint: Letters of the alphabet

2.

🍎🍌🍎🍎🍌🍎🍎🍎 🍎🍌🍎🍎🍌🍎🍎🍌

Hint: A familiar greeting

✅ Create Your Own

  1. Pick a short word or phrase.
  2. Translate each character into an 8-bit binary number using the ASCII table.
  3. Convert 0s to 🍎 and 1s to 🍌.
  4. Write the emoji sequence and provide a hint.

✅ Challenge