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Equal or Not Equal

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by

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

Start on the left, work your way across doing the calculations in your head, and write down the answer.

START ANSWER

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

Start on the left, work your way across doing the calculations in your head, and write down the answer.

START ANSWER

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
Answers

Activities
Worked
Example
Full transcript