Kids coding languages

Python

for n in range(3, 0, -1):
    print(n)
print("Lift off!")

JavaScript

for (let n = 3; n > 0; n--) {
  console.log(n);
}
console.log("Lift off!");

Lua

for n = 3, 1, -1 do
  print(n)
end
print("Lift off!")

What the numbers say

For the same idea, JavaScript asks for 21 symbols and Scratch asks for 2. Symbols are where young children stumble: a missing bracket or an extra semicolon stops a program, and a seven year old cannot yet tell which one it was.

Python and Lua sit in the middle. Python's count is close to Lua's, but Python adds one rule Lua does not: the indentation before print(n) is part of the meaning. Children learn that rule quickly, and it trains them to lay code out neatly for life.

What the numbers do not say

Typing load measures friction, not value. JavaScript's extra symbols buy it a home in every web browser on earth, which matters enormously to a teenager who wants to share a website with friends.

So the comparison does not crown a winner. It explains an order: blocks while fingers and spelling are still developing, Python once a child types comfortably, and JavaScript when the web is the goal and the symbols no longer scare them.

Why we teach the idea first

Before writing any loop, children predict what it will do: how many times, in what order, what the screen will show at the end. Only then do they run it. A child who can predict a loop in Scratch can predict one in Python.

That habit of predicting before running is the single most transferable skill in programming, and it does not belong to any language.

Where languages really differ

Some differences are deep, not cosmetic. JavaScript runs inside a web page and reacts to clicks; Luau runs inside a Roblox world shared with other players; Python is happiest working through a list of data.

Those differences shape what a child builds, which is why goal matters so much when choosing a second language.