🎯 What you will learn
- A loop repeats a build step
- The number of repeats sets the size
- Patterns repeat in games and in code
👋 Let’s get started!
In Minecraft you place one block at a time. A loop can do the placing for you! Tell it what to place and how many times, and it builds the whole row. ⛏️
🪜 Step by step
1. 🧱 One block
Placing one block is a single command.
print("Placed a stone block")2. 🔁 Many blocks
A loop places the same block many times.
for i in range(4):
print("Placed a stone block")3. 🔢 Count it
range(4) repeats 4 times. Change the number to make a longer wall.
for i in range(6):
print("Block", i + 1)🧪 Try it!
Change the code and press ▶ Run to see what happens. You can’t break anything!
Build a wall
for i in range(5):
print("Placed a block #", i + 1)
print("Wall finished!")🎨 Unplugged activity
🧱 With LEGO or wooden blocks, build a wall 5 blocks long. Count your moves out loud as a loop: “one, two, three, four, five”. Then build one 8 long!
Build a tower
for floor in range(3):
print("Placed floor", floor + 1)
print("Tower complete")📖 Key words
Tap a card to flip it over!
- Loop
- Repeats a build step 🔁
- range()
- Counts how many times to repeat 🔢
- Block
- One piece of the world 🧱
🏆 Challenge
Build a 3-block wall: print “Placed a block” three times using a loop. Press ▶ Run.
Challenge
Knowledge Check Quiz
- How many times does range(4) repeat?
- What makes a longer wall?
- What is a loop good for in building?