Metric construction and interpretation(technology)
- 1. BY, ADLIN NISHITHA NATURAL SCIENCE ROLL NO:33 METRIC CONSTRUCTION AND INTERPRETATION
- 2. PROCEDURE OF OBSERVATION • The observer sites in the classroom in the best position to hear and see the participants. • At the end of every three seconds he decides which category best represents the communication events just completed .Thus the time involves in coding one tally for every 3 seconds ,is 20 tallies in one minute,100 tallies in 5 minutes and 1200 tallies in one hour. • In this process only the serial numbers of the categories are recorded.
- 3. CONSTRUCTING INTERACTION MATRIX • After observation procedure of interaction ,the coded behaviours are written in 10x10 table . This 10(rows)x10(columns)table is known as matrix. • The category numbers of the record sheet the tabulated in the matrix table . Each number is entered in the form of sequence pairs , being used twice , first as the first numbers and second as the second number. • Hence the beginning and end of the coding should have the same number of the categories.
- 4. • It is the tradition of adding number 10 in the beginning and at the end .Hence the above number will be written in this way 10,6,10,7,5,1,4,8,4,10 10 -6(1st pair) 6-10(2nd pair) 10-7(3rd pair) 7-5(4th pair) 5-1(5th pair) 1-4(6th pair 4-8(7th pair) 8-4(8th pair) 4-10(9th pair) • Sequence of the pair :(10,6),(6,10),(10,7),(7,5),(5,1),(1,4),(4,8),(8,4),(4,10)
- 5. • While preparing matrices ,one pair is marked at a time. • In the first pair (10,6)the number 10 represents row and the number 6 represents column. • Every pair overlaps the other pair .Total tallies of the matrix(N) • Each matrix has 100 cells.
- 6. INTERACTION MATRIX TABLE 1 2 3 4 5 6 7 8 9 10 Total 1 / 1 2 0 3 0 4 / / 2 5 / / 1 6 1 7 / 1 8 / 1 9 0 10 / / 2 Total 1 0 0 2 1 1 1 1 0 2 9(N)
- 7. INTERPRETATION OF INTERACTION MATRIX 1. Teacher talk ratio/percentage of teacher talk(TT) The tallies of first seven categories are added and divided by the total tallies of the matrices (N)and hence the percentage can be calculated. TT=C1+C2+C3+C4+C5+C6+C7/N X100 2.Indirect teacher talk ratio(ITT) It indicates teacher action in encouraging and supporting pupil’s participation . Its percentage can be calculated by adding the tallies of the first four categories and dividing by the total tallies of the matrix(N)
- 8. ITT= C1+C2+C3+C4 X 100 N 3.Direct teacher talk ratio(DTT) It indicates the teacher actions restricting student participation .In this ratio,the tallies of 5th ,6th and 7th categories are added and divided by N to calculate percentage DDT= C 5+C6+C7 X 100 N
- 9. 4.Pupil’s talk ratio/percentage of pupil talk(PT) It indicates verbal activities of pupils in response to the teacher . In this ratio ,the tallies of 8th and 9th categories are added and divided by N to calculate the percentage PT=C8+C9 X100 N
- 10. 5.Silence or confusion ratio(SC) SC=C10 X 100 N 6.Indirect and direct ratio(1/D) 1/D=C1+C2+C3+C4 X 100 C5+C6+C7
- 11. ADVENTAGES 1.It provide feedback to the pupil-teacher. 2.It is an objective and reliable method for observation of classroom teaching. 3.It is mostly teacher talk oriented. 4.It is used to compare the behaviour of teachers at different age levels ,gender , subject etc 5.It is much useful in team teaching and microteaching 6.Scientific technique. 7.Measuring instrument for classroom teaching.
- 12. LIMITATIONS 1.It consumes much time in preparing 10 x10 matrix without which interpretation is not possible. 2.Less attention has been paid towards pupil talk. 3.The observers have to be trained in order to code correctly. 4.Classroom interaction of pupil –pupil type is not considered here. 5.Not economical 6.Narro structure of teaching behaviour.