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Review BODMAS for
numbers with Qs such as:
'Place brackets, where needed, to make these correct,
20 - 2 x 8-3 = 1
20 - 2 x 8-3 = 10
20 - 2 x 8-3 = 141
20 - 2 x 8-3 = 7
OR egs: on p 86 |
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- Understand
that algebraic expressions follow the same conventions
order as arithmetic operations
Ctd from previous lesson) |
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Extend Starter
activity to symbols, eg;
'Place brackets, if necessary, to make these correct:
2 x + 1 = 7 (if x=3)
2 x + 1 = 8 (if x=3)
and
other operations, eg:
2a + 3a = 5a
4b - b = 3b
6 x 3c = 18c
14d ÷ 2 = 7d |
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Activity
suggestions:
Written activity that practises correct use of brackets,
eg: 'Marking Pupils' Homework'
OR
Algebra:
the 4 Rules |
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Recap all algebraic
operations, using questions involving + - x ÷
and ( ).
Eg: 'Place brackets, if necessary, to make these
correct:'
5 + 3 ÷ 3 - 4 x 2 = 4
10 - 2 x - 4 - 3 = 3 |
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In a certain rectangle,
the length is twice the width; if the width is a,
what is :the length?the perimeter?
Extend to length factor x 3, x 4 ... |
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| - Identify the necessary
information to solve a problem; represent problems
mathematically, making correct use of symbols, words,
diagrams & tables |
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problem
solve
solution
symbol
method
results |
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Perimeter of Shapes:
develop Starter on to including 2 variables, eg;
length a & width b
length a & width a+ 1
length a & width a-2
length a & width 2/3a; |
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1) Develop Introductory
idea to problems with given perimeters, eg:
A rectangle has length a & width a+ 1, Perimeter
= 18 cm, what is length & width?
2) Extend to other shapes, eg: isosceles triangles,
pentagons, regular hexagons... |
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3 or 4 polygons
on OHP / board, perimeter?
Eg:
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