AN EVALUATION OF THE COMPLIANCE OF WAVE CONCEPTS IN RECOMMENDED PHYSICS TEXTBOOKS WITH THE NATIONAL PHYSICS CURRICULUM IN SECONDARY SCHOOLS IN SOUTHWESTERN NIGERIA

Abstract

This study evaluated the compliance of wave concepts in
recommended secondary school Physics textbooks in Southwestern
Nigeria. It examined the wave concepts and the instructional
materials used in recommended Physics Textbooks for presenting
wave concepts in achieving performance objectives stated in
National Physics Curriculum. These were with a view to providing
information on the level of compliance of wave concepts in secondary
school physics textbooks with National Physics Curriculum. The
study adopted descriptive survey research design. All of
Southwestern Nigeria's approved physics textbooks make up the
study's population. Eight out of the recommended Physics textbooks
from three states in Southwestern Nigeria was selected as samples
using simple random sampling technique. The research instruments
used for the study to collect data are Recommended Physics
Textbooks Compliance Checklist (RPTCC) and Instructional
Materials for Teaching Wave Concepts Checklist (IMTWCC).
Descriptive statistics of frequency and percentages were used to analyze the data gathered.The results of the analysis showed that the
level of compliance of textbook A with the wave motion concept is
high (84.09%). The level of compliance of textbook B is high
(79.59%). Level of compliance of textbook C is high (97.14%). Level
of compliance of textbook D is high (94.7%). Level of compliance of
textbook E is also high (78.69%). Level of compliance of textbook F is
moderate (57.6%). This results above revealed the level of
compliance of concepts of waves presented in each recommended
Physics Textbooks inline with National Physics Curriculum in
Southwestern Nigeria with textbooks G and H revealed a very high
and very low level of compliance of (86.33%) and (40.27%)
respectively.In assessing the level of wave motion analogies used my
the textbook authors to activate the readers' interest in line with
national Physics Curriculum, the result revealed the textbooks A, C,
D and G are highly compliance in terms presentational analogies
with mean and standard deviation of 2.80,1.00; 2.60, 0.73; 2.78,
0.53; and 2.56, 0.83 respectively while textbooks B, E and F showed
an average compliance with mean and standard deviation of 1.60,
0.93; 1.40, 0.93 and 1.62,1.83 respectively and textbook H revealed a
low compliance of presentational analogy with mean and standard
deviation of 1.60 and 1.71. In assessing the compliance of textbooks
with relevance instructional materials used as stated in the national
Physics Curriculum, the result showed that out of the 69
recommended instructional strategies stated in the national Physics
curriculum for the comprehension of Wave concepts to the readers,
textbook A made use of a total of 40 (57.97%) instructional materials
which shows that the level of compliance is moderate. Textbook B
made use of 39 (56.52%) instructional materials. the result further
shows that textbook C engaged 47 (68.11%) of the recommended
instructional materials in the National Physics Curriculum and
textbook D made use of 52 (75.36%) of the recommended
instructional materials in their explanation. Also, textbook E made
use of 49 (71.01%) recommended instructional materials. Textbook F
made use of 39 (56.52%) instructional materials. Furthermore,
textbook G made use of 46 (66.67%) of the recommended instructional materials in their textbook. Finally, textbook H made
use of only 12 (17.39%) of the recommended instructional materials
in the book inline with National Physics curriculum. The study
concluded that few textbooks complied with waves concepts in NPC
in terms of contents, objectives and instructional materials for
implementation of wave, the textbook with such attributes should be
made recommended for both teachers and students.