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# Equal or Not Equal

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## Mr Mattock

on 10 April 2016

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#### Transcript of Equal or Not Equal

5y - 10 = 5(y - 2)
Equal or Not Equal
Starter

85 >> ÷ 5 , + 3 , ÷ 4 , x 3 , x 3 , ÷ 5 , + 3 , ÷ 4 , + 6 ………….

24 >> ÷ 3 , - 6 , x 2 , x 9 , - 9 , x 2 , - 9 , ÷ 9 , x 6 ………….

17 >> x 2 , + 6 , ÷ 20 , x 6 , x 9 , + 10 , ÷ 2 , - 5 , + 13 ………….

56 >> ÷ 2 , + 14 , ÷ 7 , x 8 , ÷ 4 , x 6 , + 12 , ÷ 6 , x 25 ………….

41 >> - 9 , x 2 , x 3 , - 20 , ÷ 4 , x 3 , + 23 , ÷ 4 , x 3 ………….
Activity
Cut out and sort the cards into expressions, equations, inequalities and identities.
Equations, inequalities, and identities
What do each of these say?

3x + 6 = 5x + 2

3x + 6 > 5x + 2

3x + 6 = 3(x + 2)
Starter

85 >> ÷ 5 , + 3 , ÷ 4 , x 3 , x 3 , ÷ 5 , + 3 , ÷ 4 , + 6 ………….

24 >> ÷ 3 , - 6 , x 2 , x 9 , - 9 , x 2 , - 9 , ÷ 9 , x 6 ………….

17 >> x 2 , + 6 , ÷ 20 , x 6 , x 9 , + 10 , ÷ 2 , - 5 , + 13 ………….

56 >> ÷ 2 , + 14 , ÷ 7 , x 8 , ÷ 4 , x 6 , + 12 , ÷ 6 , x 25 ………….

41 >> - 9 , x 2 , x 3 , - 20 , ÷ 4 , x 3 , + 23 , ÷ 4 , x 3 ………….
L.O. - Understand the use of identity, equality and inequality notation, and the meanings when expressions are linked using these notations.
Equations, inequalities, and identities
What do each of these say?

3x + 6 = 5x + 2

3x + 6 > 5x + 2

3x + 6 = 3(x + 2)
3x + 6 is possibly equal to 5x + 2 for some values of x. We can try and find those values of x. This is an
EQUATION
3x + 6 is possibly more than 5x + 2 for some values of x. We can try and find those values of x. This is an INEQUALITY
3x + 6 is identical to 3(x + 2) and so will be the same for any value of x that we choose.
Equalities, inequalities, and identities
5y - 10
5y - 10 = 2
5y - 10 = 4(y - 7)

f
(y) = 5y - 10

x = 5y - 10
Equality
Equation
Function
Formula
Inequality
5y - 10 > 7
5y - 10 < y - 3
Identity
Activity
Cut out and sort the cards into expressions, equations, inequalities and identities.
Key
Examples

Activity
On the whiteboard:

I will write down some algebra, you write down whether it is an Equation (Eq) Inequality (Iq), an Identity (Id) or None of these (N)
Activity