Math Adventure

Hello Math Explorer! Get ready for an exciting adventure.

Each topic has fun activities and games to help you learn. Complete all sections to learn well!

🔢 ➕ ➖ ✖️ ➗

Math Adventure Complete! 🎉

🏆

Is 15 a Prime Number? If Rectangle is formed, that is not a Prime Number.

1

2

3

4

5

6

7

8

9

10

Total Blocks: 15

Help Eratosthenes find all Prime Numbers up to 100!

Find the Primes!

1. Click on a Number to remove it's multiples.
2. Watch as it's multiples disappear!
3. Keep going until all numbers left are Prime

Prime numbers can be represented only on a straight line (a 1xn or nx1 rectangle).

They have only 2 factors: 1 and the number itself.

For example

The number 5 can be represented in only 2 ways!

In a row (1 x 5)

In a column (5 x 1)

The factors of 5 are 1 and 5.

A Composite number can be represented in a rectangular form with more than 1 row and 1 column.

A composite number has more than 2 factors.

The factors of 6 are 1, 6, 2 and 3.

For example

The number 6 can be represented as 2 X 3 or 3 X 2

2 rows by 3 columns (2 x 3)

3 rows by 2 columns (3 x 2)

The number 1 is a special number. It can only be represented in 1 way.

1 x 1

It can't be Prime, it needs two different factors: 1 and itself, but 1 only has one unique factor.

It can't be Composite it needs more than two factors.

Therefore, 1 is neither Prime nor Composite!