Task 1 – L4
1) Work out the following
mathematical anagrams
a) lnieqtvaue
Equivalent
b) roumatern
Numerator
c) taminoorend
Denominator
Task 3 – L6
Task 2 – L5
2) Fill the spaces to make
equivalent fractions
a)
b)
3
18
3) What is the lowest common
multiple (LCM) of:
a) 3 and 4
12
b) 4 and 5
20
c) 5 and 6
30
c)
d)
36
70
Adding and
subtracting fractions
22/05/2014
Objective: I should be able to add and subtract
fractions. (L5-6/Grades E-D)
Keywords: numerator, denominator, simplify, equivalent
By the end of the lesson:
Must learn: to add and subtract fractions with a
common denominator. (5c/E-)
Should learn: to add and subtract fractions with
different denominators. (one change) (5a/E+)
Could learn: to add and subtract fractions with
different denominators.(two change) (6c/D-)
Real life link: You might need to add or subtract
distances involving fractions.
Must learn: to add and subtract fractions
with a common denominator. (5c/E-)
INTRODUCTION
Colour in the fractions and add them. What do you notice?
5
6
7
9
2
3
1
5
=
10 2
Should learn: to add and subtract fractions with different
denominators.
(onewith
change)
(5a/E+)
Fractions
different
denominators
1 3
+
2 8
4 3
+
8 8
7
=8
Can you work out what has happened to
get to this answer?
1 7
+
3 12
4 7 11
+
=
12 12 12
YOUR TURN (mini whiteboards)
1)
2) 16 - 3
2
1
+
=
5
10
21
=
16
9
21
21
4
1
+
10
10
4+1
10
7
=
5
10
16 - 9
7
1
=
=
21
21
3
A bit of work…
Task 1 – Bronze (L5c)
Task 2 – Silver (L5a)
MINI-PLENARY
Q1
TRUE
Stand Up
5
7
1
=
+
12
12
6
FALSE
Remain Seated
MINI-PLENARY
Q2
TRUE
Stand Up
2
6
4
=
+
7
14
7
FALSE
Remain Seated
MINI-PLENARY
Q3
TRUE
Stand Up
1
7
=
6
18
2
9
FALSE
Remain Seated
Could learn: to add and subtract fractions with
different denominators.(two change) (6c/D-)
2
3
1
4
+
8
12
=
+
3
12
11
12
Multiples of
3 and 4
3
4
6
8
9
12
12
16
15
20
12 is the LCM
YOUR TURN (mini whiteboards)
1
1
+
2
3
1)
2) 4 - 1
=
5
3
2
+
6
6
Multiples of
2 and 3
3+2
6
16
5
20
20
5
=
6
Multiples of
4 and 5
2
3
4
5
4
6
8
10
6
9
12
15
8
12
16
20
10
15
20
25
6 is the LCM
4
=
20 is the LCM
11
16 - 5
=
20
20
A bit of work…
Task 1 – Bronze (L5c)
Task 2 – Silver (L5a)
Task 3 – Gold (L6c)
PLENARY – CELEBRITY TOP TRUMPS
PLENARY – CELEBRITY TOP TRUMPS
PLENARY – CELEBRITY TOP TRUMPS
Adding and
subtracting fractions
22/05/2014
Objective: I should be able to add and subtract
fractions. (L5-6/Grades E-D)
Keywords: numerator, denominator, simplify, equivalent
By the end of the lesson:
Must learn: to add and subtract fractions with a
common denominator. (5c/E-)
Should learn: to add and subtract fractions with
different denominators. (one change) (5a/E+)
Could learn: to add and subtract fractions with
different denominators.(two change) (6c/D-)
Real life link: You might need to add or subtract
distances involving fractions.