Addition of negative numbers

1. SELF DESIGNED INNOVATIVE LESSON
Name of the teacher : Sreelekshmi TS Std : VIII
Name of the school : GMGHSS Pattom Div : C
Subject : Mathematics Strength : 36
Unit : Negative Numbers Date : 24/07/2014
Sub Unit : Addition of negative numbers Duration : 45 Min
CURRICULAR STATEMENT
To learn the addition of negative number
CONTENT ANALYSIS
TERMS: Negative, positive numbers
FACTS: (i) In a number line the value of numbers increases from left to right.
(ii) Subtracting large number from a small number.
CONCEPT: The concept 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: + , -
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LEARNING OUTCOMES
The pupil,
(i) remember the above facts, concept 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, concepts in new and relevant situation.
(iv) discriminates the above facts and concept related to addition of negative numbers.
(v) detects the above facts, concept related to addition of negative numbers.
(vi) design a new idea related to addition of negative numbers.
(vii) develops skill related to addition of negative numbers.
(viii) creates interest related to addition of negative numbers

2. PRE-REQUISITES: Identify the negative numbers.
LEARNING AIDS : Cut outs, Ball, Chart, Ordinary class room equipments,duster.
LEARNING STRATEGIES: Group discussion, Group activity method
Interaction Procedure Pupil Response
To check previous knowledge teacher asks 3-
5 is _____
Students say 3-5 is -2
Activity 1
Teacher says the following figure shows a
string of different colour. Find out the answers
for questions. Suppose the given figure is a
number line.
-4 -3 -2 -1 0 +1 +2 +3 +4
(i) Which position has yellow colour?
(ii) Which position has green colour?
(iii) Which position has red colour?
(iv) Which position has blue colour?
Teacher again confirms the concept in a
number line the value is increasing from left to
right.
Students observe.
Students do the problem
The position is -3
The position is 1
The position is 2
The position is -4
Activity 2
Teacher given different colours of balls for
each groups. Then told to subtract certain
colour of balls from the other colours of balls.
.
Group 1
Group 2
Group 3
Students actively participated in group
activity.
Group 1 Answers
Red Ball = 2
Green Ball = 3
2-3 =-1
Group 2 Answers
Red Ball = 4
Yellow Ball = 5
4-5 = -1
Group 3 Answers
Blue ball = 2
Yellow ball = 4
2-4 = -2

3. Interaction Procedure Pupil Response
Class assignment Teacher give some
problems to do .
(i) 11-79
(ii) 20-50
(iii) 26-73
(iv) 48-84
(v) 16-25
(i) 11-79 = -68
(ii) 20-50 = -30
(iii) 26-73 = -47
(iv) 48-84 =-34
(v) 16-25 = -9
Review
(i) 5-3+1
(ii) 2-4-1+2
Follow up activity
Home Assignment
Find
(i) 5-6+2-4
(ii) 3-5+6-1
(iii) 4-7+8-1
(iv) 6-5+1-1
Enrichment Activity
What is the value of (-1/3) x 3 = ?
(i) 5-3+1 = 3
(ii) 2-4-1+2=-1