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Amidst the myriad challenges that threaten Nigeria's educational system is the declining learning outcomes of students across schools in Nigeria. Identifying and mitigating the challenges and deploying global innovative best practices into Nigeria's educational system may provide the needed solution. Therefore, the impact of climate change (CC) on teachers' efficiency, educational resources and students' learning optimization in Lagos State was examined. A mixed research method, involving quantitative and qualitative methods, was adopted for the study. CC learning optimizations (CCLO) questionnaire was used as an instrument for data collection. Random sampling technique was used to select 480 respondents for the study. Frequency counts with percentages and a t-test statistical analysis were used to analyses the data. Result showed that CC effects like heat waves, high rainfall and flooding can threaten teachers' classroom efficiency, and learning resources and thus negatively influence students' learning outcomes. Excessive heat due to global warming could affect students' comprehension and retention. Extreme temperature and rainfall experienced in early school year can cause few years of schooling later in life. There was no significant difference in perception of impact of CC on student learning optimization based on gender (t-test). It was concluded that CC affects teachers' efficiency, learning resources, and students' learning optimization. Addressing the problem of CC can support teachers' efficiency and improve students' learning outcomes. [ABSTRACT FROM AUTHOR]

A graphic organiser is one of the teaching methods that can assist learners to organize information, structuring the information and relating the concept to another. Secondary school students perceived computer networks as one of the difficult concepts in computer studies. This study examines the potency of graphic organisers in learning computer networks in the newly implemented ICT curriculum in Nigeria. This study employed a quantitative research approach. The data collected was analysed with ANCOVA with pre-test scores as the Covariate. The results from the study reveal that students in the experimental group performed better than their counterparts in the control group due to the intervention they had. Thus the results show that there is a significant difference in the performance of students taught computer networks using the two methods- graphic organisers and lecture method irrespective of their gender. This study is unique because it relies on the testing of visual and graphical representations of contents in reducing the hitches in the study of computer networks which justifies the adoption of the graphic organisers in learning ICT. [ABSTRACT FROM AUTHOR]