A1 How Number Systems Work
🌍 A1: Number Explorer
Mission: Discover how different number systems work. Why do humans count in Base 10?
Why Base 10?
Humans probably count in tens because we have ten fingers.
10 ones = 1 ten
This is the structure of Base 10.
Base 10 Blocks
Dienes blocks help us see how Base 10 is built.
1, 10, 100, 1000
Ones, tens, hundreds and thousands show place value.
Computers Use Base 2
Computers only understand OFF and ON.
0 and 1
Every game, app and website uses binary.
Alien Numbers
If aliens had three fingers, they might count in Base 3.
0, 1, 2, 10
Different bases use different grouping rules.
🤔 If humans had eight fingers instead of ten, would we count in Base 8?
Course Content
The Structure of Numbers
Bonus Mission – Create your own colour using Base 16
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