Number & Algebra- Properties of Numbers

My Goal: 
Identify and describe properties of prime, composite, square and triangular numbers

• understanding that some numbers have special properties and that these properties can be used to solve problems
• representing composite numbers as a product of their prime factors and using this form to simplify calculations by cancelling common primes
• understanding that if a number is divisible by a composite number then it is also divisible by the prime factors of that number (for example 216 is divisible by 8 because the number represented by the last three digits is divisible by 8, and hence 216 is also divisible by 2 and 4)

 Prime or Composite

Videos to revise the topic: Prime Numbers & Composite Numbers

Lyrics: Some numbers are alone, they sit up on a shelf. Nothing divides into them but 1 and themselves. Other numbers have lots of fun and friends they have aplenty. Like 2 x 3 is 6, and 5 x 4 is 20. Some numbers just stand alone. And others you divide, numbers are composite or prime.

Activity 1: Use these games to revise the topic

Prime and Composite Games/ Revision

Activity 2: Book Work: Rule up your Grid Math Books. Put the title and date. Work through these questions. 

This video will help with question H

2) Book Work 

Activity 3: For Fun- Sieve or Eratosthenes (Finding Prime Numbers)
​Watch the Video and grab a sheet from your teacher to have a go!

Click on the picture below to have a go!!

Activity 4- Partner Work. Collect a sheet from the teacher. Find the Prime Numbers to complete the maze and help the dog reach the bone. You may use a calculator if needed.

Activity 5- With a teacher.

Find the station with these numbers 1-100 in a box. Pull out 10 random numbers.
Decide if they are Prime or Composite 

If they are composite, write down all of the factors (numbers that can be multiplied to make the whole number)
For e.g.- If you get the number 12
in your book you would write

1. 12: 1,2,3,4,6,12  (Composite)
​
If you got 7 you would write
2. 7: Prime

Book Work- Note Taking

1. Write the title, 'Prime and Composite Numbers; Factors and Multiples' at the top of your Math book.

2. Use notes on your laptop or a piece of paper to draft your definitions and examples.

3. Get the template from your teacher. Cut it out and fold. Write your information on the sheet and glue it into your book.

Extension Activity

Create a video clip tutorial of one of these concepts- Factors, Multiples, Prime and Composite Numbers. (You can do all of them if you like!)