Read the cards and drag them to the correct civilization!
"We used dots and lines. We were the first to have a symbol for zero."
"We used pictures! A stick is 1, a rope is 100, a flower is 1000."
"We used vertical and horizontal lines. A blank square was zero."
Look at the numbers. What do we add to make the next number? Complete the sequence!
Click the numbers in order (1-9) or click the correct cell to place them!
Rule: Start top-middle, move Up-Right!
Write your friend's name in code!
| a | b | c | d | e | f |
|---|---|---|---|---|---|
| 2 | 4 | 7 | 11 | 16 | 22 |
Your Code:
...
You fixed the ancient numbers and saved the timeline!
Achievements: