What Makes a Number Prime or Composite?
Numbers are like secret agents - some work alone, while others have teams!
A prime number is a special number that has exactly two factors: 1 and itself. It's like a lone wolf!
A composite number has more than two factors. It's like a party with lots of friends!
The number 1 is neither prime nor composite - it's unique!
How to Tell if a Number is Prime or Composite
1️⃣ Find all the factors of the number (numbers that divide it evenly)
2️⃣ Count how many factors it has
3️⃣ If exactly two factors → Prime! If more → Composite!
Let's Play Number Detective!
Example 1: Click to Reveal!
Click on these numbers to discover if they're prime or composite:
7
12
23
30
Example 2: Test Your Skills!
Is this number prime or composite? Type your answer below:
17
Parent Tips 🌟
- Make it a game: Challenge your child to find all prime numbers under 50 - it's called the "Sieve of Eratosthenes"!
- Real-world connection: Point out how prime numbers are used in computer security and encryption.
- Visual learning: Use small objects (like buttons or beans) to arrange into rectangles - prime numbers can only make one row!