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INTERVENSIFRACTIONTOPIC 2
Look at the diagrams and discuss with your friends and teacher.
a)
(Diagram A)
b)
(Diagram B)
c)
(Diagram C)
d)
(Diagram D)
INTERVENSIFRACTIONTOPIC 2
i. Learning Area : Addition of fractionii. Learning Objective : Add mixed numbers with denominators of up to 10iii. Learning Outcomes: Add mixed numbers with different denominators of up to 10
Step 1: Pupils discuss in group the fraction of the shaded part from each diagram.
Set Induction
1. Teacher shows diagrams, from a stimulus page. The diagrams consist of severalshaded parts
Teaching Aids
Diagrams manipulative materials worksheets.
Duration: 1 hour
Expected answers from pupils:
1. a)73
b)44
= 1 ( one whole)
c )62
=31
d)45
= 141
2 .75
3.89
or 181
4. 181
Teacher’s Instruction:
1.What is the fraction of the shaded part( a, b , c and d )
2. Based on the diagrams given, add a and b .
3. Based on the diagrams given, add c and d .
4. What is the simplest fraction of c ?
5. Simplify fraction d .
Notes To Teachers:
Try to follow the phases of discussion:o Modeling / stripe papero Sharing / cakeo creating.
Guide pupils to discuss about the fraction..
Pupils compare the sizes and use words such as bigger and smaller.,
Teacher guides pupils to say the fraction in correct terms.
Pupils’ Activity.
Discuss about thediagrams.
Take turn to talkfrom theirexperiences
INTERVENSIFRACTIONTOPIC 2
CASE:
1a. Pupils find difficulty in finding the same denominator before adding.
SOLUTION: 1
1. Use diagrams to show the process of addition in fraction.
Example :311 +
912
Step 1:
31 +
91
1 + 2
Step 2 : Add the whole number
+
1 2
Step 3: Emphasize that 1 of 3 portions is equivalent to 3 of 9 portions.
Teacher’s Instruction:*How do you get theanswer ?* First look at thedenominatorIs it the same ?
Find the samedenominator
31 =
93
INTERVENSIFRACTIONTOPIC 2
Step 4: Add the fractions
+ = =
Step 5: Combine the whole number and fraction.
3 + 94
= 3 94
SOLUTION: 2
Example :311 +
912
Step : 1 Change311 to the equivalent fraction with the same
denominator by using table of common lowest factor.
X 3 X 9
3 9
6 18
9 27
33311
xx =
931
Add the fractionswith the samedenominator
93 +
91 =
94
What is youranswer ?
INTERVENSIFRACTIONTOPIC 2
Step : 2 Add93
1 to91
2
931 +
912
1. Add the whole number first 1 + 2
2. Add the fractions93 +
91
3. ( 1 + 2 ) (93 +
91 )
=943
INTERVENSIFRACTIONTOPIC 2
WorksheetAdding fractions.
21 + 4
1=
43
86
84 + 8
2=
21 + 4
1=× 4 × 2
Multiply thedenominators
Add thenumerators
Simplify
21 + 4
1=
× 4 × 2
× 4 × 2
Multiply thenumerators
INTERVENSIFRACTIONTOPIC 2
Adding fractions.
Exercises
31 +
61
=61 +
53
=
21 +
52 =
53 +
31 =
71 +
43 =
41 +
95 =
92 +
21 =
74 +
31 =
83 +
31 =
92 +
52 =
1
2
6
7
3 8
4 9
5 10
INTERVENSIFRACTIONTOPIC 2
83 +
21 =
41 +
61 =
95 +
31
=61 +
83
=
52 +
103
=101 +
65
=
41 +
83 =
65 +
91 =
61 +
21 =
43 +
101 =
11 16
1712
13 18
1914
15 20
INTERVENSIFRACTIONTOPIC 2
212
31 + 1
61 =
264
61 + 5
32 =
222
41
+ 181
=27
432
+ 161
=
234
52 + 1
103 =
287
81 + 2
43 =
242
41 + 5
21 =
292
101 + 5
53 =
252
83 + 1
41 =
304
83 + 1
41 =
