What Are Prime and Composite Numbers?
Numbers are like special friends - each has its own unique personality!
A prime number is a number greater than 1 that can only be divided by 1 and itself. It's like a special club with only two members! A composite number has more than two factors - it's like a big party with lots of friends!
How to Tell Them Apart
1️⃣ Find all factors of the number (numbers that divide it evenly)
2️⃣ Count the factors - if there are exactly two, it's prime!
3️⃣ Check for more - if there are three or more factors, it's composite!
Let's Play Number Detective!
Example 1: Sort the Numbers
Click on each number to see its factors. Then decide if it's prime or composite!
7
12
23
9
2
Example 2: Prime Number Challenge
Which of these numbers between 30 and 40 are prime?
Parent Tips 🌟
- Make it a game: Challenge your child to find all prime numbers under 50 - time them for extra fun!
- Real-world connection: Explain how prime numbers are used in computer security and secret codes.
- Visual learning: Use small objects like beans to create arrays - prime numbers can only make one rectangle!