期刊名称：International Journal of Advances in Engineering and Management
电子版ISSN：2395-5252
出版年度：2022
卷号：4
期号：2
页码：383-399
DOI：10.35629/5252-0402203207
语种：English
出版社：IJAEM JOURNAL
摘要：Educational institutions are nowadays facing the reality of the widespread and high rate of development of mobile phones, this has involved an increase in both mobile phones storage capacity and speed which facilitate Mobile Learning. The teaching-learning materials need to be re-designed, re-developed and carried out in a way that fits this new kind of learning and makes it more effective. The advances in the use of technology in today's mobile phones qualify them to be instructional tools. Hence, the role of mobile phones/devices in presenting instruction for achieving effective teaching and learning cannot be over looked in the field of science generally and that of Chemistry in particular due to its perception as a difficult and abstract science subject by teachers and students. Hence, Chemistry has been identified as a field of knowledge that is of utmost importance to sustainable development of a nation. Since knowledge is required in the provision of human needs. Periodicity is one of the abstract concepts in Chemistry that requires better understanding by the students for further learning of Chemistry to take place. Thus, the teaching of the concept requires the use of effective instructional strategy such as mobile learning. As a result, the study developed and evaluated a Mobile Learning App on periodicity for Nigeria Certificate in Education (NCE) students using the heuristic evaluation guidelines. Two instruments (Experts‟ Usability Evaluation Questionnaire and Students‟ Usability Evaluation Questionnaire) were used to gather information from the two sets of respondents. The instruments for both experts and students were validated and tested for reliability by giving it to experts and students and subjecting them to analysis using inter rater reliability and Cronbach alpha from which 0.81 and 0.75 were arrived at respectively. The data collected were collated and analysed using descriptive statistics such as mean, standard deviation and inter rater agreement while the hypothesis was tested using ttest statistics. The analysis was carried out with the aid of SPSS version 20. Findings from the study revealed that students generally had positive perceptions towards MLA as a learning tool. The experts also agreed that MLA conformed with Heuristic guidelines technically and pedagogically. Also, there was no significant difference in the opinions of male and female students as regard usability of MLA. Hence, it is therefore concluded that MLA is a learning tool that can be employed for teaching periodicity. It is therefore recommended that students should be encouraged to use mobile learning App for learning of periodicity by their instructors for effective learning of the concept Experts in the field of Chemistry should encourage students to make use of the mobile learning App Gender should not be prioritised when encouraging students to use mobile learning App for learning of Chemistry concepts.
