The document discusses how to represent an unknown quantity of sweets using algebraic expressions, denoting unknown number of bags as 'n'. It provides examples of forming expressions like '3n + 3' and guides on illustrating these expressions graphically. The focus is on manipulating and understanding these mathematical representations.

1. • How many sweets are in this bag??
BELL WORK
n

2. We don’t know!
We have to call it ‘n’ for aNy number!
ANSWER
n

3. • How many sweets are here??
• 3 bags of n and 3 more!
• We write this as 3n + 3
n n n

4. • Write expressions to show how many sweets
are on each slide. Remember: -
• n is the number of bags
• Just write a number for sweets
MAIN 1
n

5. 3n + 2
n
n
n

6. 2n + 1
n n

7. 4n
n n
n n

8. 6n + 5
n
n n
n
n
n

9. • This time, you need to draw pictures from the
expression.
• E.g. 4n + 2
MAIN 2
n
n n
n

10. 2n + 2
n
n

11. 3n + 1
n
n
n

12. n + 2
n

13. n
n