Addition of negative numbers

1. SELF DESIGNED INNOVATIVE LESSON
Name of the teacher: Saranya. V.S Standard : viii
Name of the school : G.G.H.S.S,Pattom Division : A
Subject : Mathematics Strength : 35
Unit :Negative numbers Date : 23/7/2014
Subunit :Addtion of negative numbers Duration : 40 mints
CURRICULAR STATEMENT
To learn about the addition of negativenumbers
CONTENT ANALYSIS
TERMS : Negative, positive, numbers.
FACTS : Subtracting a large number from a small number gives negative number
CONCEPT : The concept of teaching and learning addition of negative numbers.
PRINCIPLE : The principle of teaching and learning addition of negative numbers.
PROCESS : The process of teaching and learning addition of negative numbers.
PROCESS SKILLS :Observing ,measuring ,inferring ,comparing.
SYMBOL : -, +
LEARNING OUTCOMES
The pupil :
i. remembers the above facts, concepts related to addition of negative numbers.
ii. develops understanding on the above facts ,concepts related to addition of
negative numbers.
iii. applies the above facts, concept in new and relevant situation.
iv. discriminates the above facts and concept related to addition of negative
numbers.

2. v. detects the above facts concept related to addition of negative numbers.
vi. design a new idea related to addition of negative numbers.
vii. develop skill related to addition of negative numbers.
viii. create interests in solving problem on addition of negative numbers.
PRE_REQUISITES : Identifying negative numbers.
LEARNING-AIDS : Cut outs, sequences, chart, coins, ordinary class room equipments-chalk,
duster.
LEARNING STRATEGIES: Group discussion, group activity method.
INTERACTION PROCEDURE PUPIL RESPONSES
Introduction
To check the previous knowledge teacher asks
what is 3-2 ?
2-3 ?
ACTIVITY 1
Teacher says the following figure shows temperature
of different regions. Suppose the figure is a number
line. Find the answers for the following questions.
C B E F G H D I A
-4 -3 -2 -1 0 +1 +2 +3 +4
Pupil says 3-2 = 1
2-3= -1
Pupil says the answers
1) Temperature increases from left to right
2) Place A has very high temperature.
3) Place C has very low temperature.
4) +2
1) Is the temperature decrease or increase from left to
right?
2) which place has very high temperature.?
3) which place has very low temperature.?
4) Temperature of place D is ?

3. ACTIVITY 2
Teacher divides the students in to five groups then
gives different colours of sequences for each groups
Group 1
●●●● ●●●●●●
Red number of sequence –Greennumber
ofsequences=
Group2
●●●●●●●●●●●●●●
yellow number of sequence –Red numberof sequence
=
Group3
●●●●● ●●●●●●●●
Blacknumber of sequence –Bluenumberof sequences=
Group4
●●●●● ●●●●●●●●●
Students actively participated in the group activity
Group1 answers
4-6= -2
Group 2 answers
6-8=-2
Group 3 answers
5-8=-3
Group 4 answers
5-9=-4
Group 5answers
4-7=-3
Orange number of sequence-Green number of
sequences=
Group5
●●●● ●●●●●●●●
Red number of sequence –Green numberof
sequences=
Teacher says now we are going to play a game.
teacher will give you coins for each group you should

4. toss the coin. For a head you will get 5 points and a
tail you will loss 2 points.
Teacher asks can we play….?
ACTIVITY3
Teacher presents a chart.
CHART
GROUP
NO:
TRAILS TOTAL
1 Head
Tail
2 Head
Tail
3 Head
Tail
4 Head
Tail
5 Head
Tail
CLASS-ASSIGNMENT
1) 2-5-4-6
2) 7-3-4
3) 8-3-2-5
REVIEW
What is 3-7
5-8
Students keenly observe the teacher
Students says yes.
Students fill the chart..
GROUP
NO:
TRAILS TOTAL
1 Head 5 -3
Tail 2 2 2 2
2 Head 5 5 4
Tail 2 2 2
3 Head 5 -3
Tail 2 2 2 2
4 Head 5 5 5 5 18
Tail 2
5 Head 5 5 4
Tail 2 2 2
Students do the problem and write the answers
1) -13
2) 0
3) -2
Students says the answers
3-7 = -4
5-8 = -3

5. FOLLOW-UP-ACTIVITY
HOME-ASSIGNMENT
Find 1)5-6+2
2)8-2+5
3)4-5+6
ENRICHMENT_ACTIVITY
Suppose you have an amount of Rs 100 but your
friend need Rs 150.you bought 50 rupees from
another one and gave it to your friend. Now the
amount with you? How will you represent the
situation using negative numbers?