Findings:
Pre-Test and Post Test Results
Student
|
Mark
(%)
|
|||
Pre-Test
|
Post
Test
|
|||
1
|
10.00
|
90.00
|
||
2
|
10.00
|
80.00
|
||
3
|
30.00
|
100.00
|
||
4
|
20.00
|
100.00
|
||
5
|
10.00
|
80.00
|
||
6
|
0.00
|
70.00
|
||
7
|
30.00
|
100.00
|
||
8
|
20.00
|
80.00
|
||
9
|
0.00
|
80.00
|
||
10
|
30.00
|
100.00
|
||
11
|
0.00
|
90.00
|
||
12
|
10.00
|
50.00
|
||
13
|
0.00
|
50.00
|
||
14
|
60.00
|
90.00
|
||
15
|
30.00
|
80.00
|
||
MEAN
|
17.33
|
82.67
|
||
Table 1.0:
Pre-test and post-test marks for 15 students.
The pre-test and post-test marks were analysed by comparing mean score
of both tests.
Mean Score
|
Difference
(%)
|
|
Pre-Test (%)
|
Post-Test (%)
|
|
17.33
|
82.67
|
+
65.34
|
Table 2.0: Comparison between mean score of pre-test and post-test.
Diagram 6.0: Bar chart for the mean score of pre-test and post test
results.
Mean score for pre-test was 17.33 %, while for the post-test it was
82.67%. From the Table 2.0 and Diagram 6.0, it showed 65.34% improvement on
students’ overall performance after guiding them using the Houses of Elements
standard. This improvement showed that this standard was effective in helping
weak students to deduce valence electronic configuration, predict the position
of elements in the Periodic Table.
Questionnaire
|
Bil
|
Statement
|
Strongly Disagree
|
Disagree
|
Agree
|
Strongly Agree
|
|
1
|
I can write valence electronic configuration
using 2|8|8|18|18 standard.
|
0
(0.00%)
|
0
(0.00%)
|
5
(33.33%)
|
10
(66.67%)
|
|
2
|
I can easily determine position of an element
in the Periodic Table using 2|8|8|18|18 standard.
|
0
(0.00%)
|
0
(0.00%)
|
7
(46.67%)
|
8
(55.33%)
|
|
3
|
I can easily determine an element is metal or
non-metal based on the position of the element in the Periodic Table deduced
using 2|8|8|18|18 standard.
|
0
(0.00%)
|
2
(13.33%)
|
6
(40.00%)
|
7
(46.67%)
|
|
4
|
I can easily determine ionic or covalent
compound based on the position of the elements (that made up the compound) in
the Periodic Table deduced using 2|8|8|18|18 standard.
|
0
(0.00%)
|
5
(33.33%)
|
8
(55.33%)
|
2
(13.33%)
|
|
5
|
I can easily determine the least
electronegative element in a polyatomic molecule based on the position of the
elements (in the compound) in the Periodic Table deduced using 2|8|8|18|18
standard.
|
0
(0.00%)
|
3
(20.00%)
|
6
(40.00%)
|
6
(40.00%)
|
|
6.
|
I like to my lecturer using the 2|8|8|18|18
standard to teach valence electronic configuration writing and position of an
element in the Periodic Table deduction.
|
0
(0.00%)
|
0
(0.00%)
|
5
(33.33%)
|
10
(66.67%)
|
|
7.
|
The 2|8|8|18|18 standard is effective in
helping me to understand on how to write the valence electronic configuration
of an element.
|
0
(0.00%)
|
0
(0.00%)
|
5
(33.33%)
|
10
(66.67%)
|
|
8.
|
The 2|8|8|18|18 standard is effective in
helping me to understand on how to deduce the position of an element in the
Periodic Table.
|
0
(0.00%)
|
0
(0.00%)
|
4
(26.67%)
|
11
(73.33%)
|
|
9.
|
The 2|8|8|18|18 standard is effective in
helping me to deduce metal or non-metal nature of an element, ionic or
covalent compound and the least electronegative element in a compound.
|
0
(0.00%)
|
2
(13.33%)
|
9
(60.00%)
|
4
(26.67%)
|
|
10.
|
The 2|8|8|18|18 standard should continue be
used in teaching and learning the valence electronic configuration writing
and deducing the position of an element in the Periodic Table.
|
0
(0.00%)
|
0
(0.00%) |
3
(20.00%)
|
12
(80.00%)
|
Table 4.0: Students’ response on applying the Houses of Elements standard
in teaching and learning.
Based on the questionnaire results, it could be seen that 100 % students
agreed that they could write the valence electronic configuration and determine
the position of an element in the Periodic Table after applying the Houses of
Elements standard. After the Houses of Element standard was introduced, 86.67 %
of students agreed that they could deduce metal or non-metal of an element
easily while 68.66 % could determine the least electronegative element in a
polyatomic molecule. 100 % students agreed that they liked their lecturer to
employ this standard in teaching valence electronic configuration writing and
the position of an element in the Periodic Table deduction. All students agreed
that this standard was effective in improving their comprehension on how to
deduce the position of an element in the Periodic Table and how to write the
valence electronic configuration of an element. In deducing the metal or
non-metal nature and the least electronegative element in a polyatomic
molecule, 86.67 % students agreed that this standard was effective. Overall,
all students agreed that this standard should continue be used in teaching and
learning the valence electronic configuration writing and the position of an
element in the Periodic Table determination.
Discussion
When the Houses of Elements standard was introduced, students’ response
was overwhelming. As they were involved in the derivation of the standard in
Step 1, they had clearer picture where roughly an element would be in the
Periodic Table when attempting to deduce the position of the element using the
standard without referring to the Periodic Table. This also improved their
comprehension on the valence electronic configuration writing using the
standard. Overall during the lesson, students were actively involved in the
teaching and learning process with many volunteers to perform the deduction on
the board. Students could be seen to be proactive in attempting the questions
given and engaging in constructive discussion with friends to enhance their
understanding.
In term of teaching, I strongly believe that the Houses of Elements
standard should be used in teaching and learning electronic configuration writing
and the position of the elements in the Periodic Table as some students require
a standard to refer when performing deduction. However, this standard can only be
used for the elements up to Period 5. Beyond Period 5, lanthanides and
actinides would make the pattern slightly more complicated and modification on
the standard is required before a reasonable deduction can be performed.
No comments:
Post a Comment