📖 Theory · Lesson 1
What is coding?
Computers speak their own language: binary code. It is made of strings of 0s and 1s. We use it to write instructions that tell a computer what to do. A set of instructions is called a program.
01001000 01101001
This says "Hi" in binary code!
Coding means writing a program that tells a computer what to do. Laptops, phones and tablets need programs to work, and so do everyday things like washing machines and traffic lights.
Write a program
A robot starts in the bottom-left square 🤖 and must reach the apple 🍎. Each instruction moves it a number of squares. The order matters!
🍎
🌳
🤖
🐶
1. Go up two squares.
2. Go right three squares.
3. Go up one square.
2. Go right three squares.
3. Go up one square.
🔤 Science English: first, next, then, finally
Use these words to put instructions in order: First, go up two squares. Next, go right three squares. Finally, go up one square.
0️⃣1️⃣ binary code📝 program = set of instructions