Innovative researches and findings of science educators and scholars on the effectiveness of ethno science based instructional model and approach remains unproductive in the field of chemistry education because of the continuous ignorance and neglect of ethno scientific practices by chemistry instructors. This neglect which could possibly be as a result of a lack or, inadequate awareness has stalled moves for contextualized system of chemistry education for more meaningful learning and effective teaching. In view of this, this study sought to ascertain secondary school chemistry teachers' level of awareness of ethno science practices and the predictive value of teacher variables and school location. The study adopted descriptive survey research design. Data were collected from a sample of 150 chemistry teachers drawn from rural and urban secondary
This study constructed a two tier multiple choice questions to assess the levels of conception of students in qualitative and quantitative inorganic analysis. The study is an ex-post facto. The population consisted of all S.S.S.3 students in Ibadan south-west local government area of Oyo state, Nigeria. The sample is made of five public and five private schools selected from the local government and a total of 500 students attempted the test. The data were analysed using Analysis Of Variance and Tukey to ascertain the direction of difference in the three levels of conception. Results showed that there was a significant difference in the three levels of conception by the secondary school students in Chemistry. More students were discovered to be at the macroscopic level which was the farthest from the meaningful learning of the concepts. Furthermore, very few were at the submicroscopic and symbolic levels of conception which was the closest to the meaning of those concepts in qualitative and quantitative analysis. Recommendations based on the importance of proper and high level of conception were made.
Physical chemistry has been an aspect of chemistry which students find difficult at the secondary and tertiary levels of education. In the past, the effort of researchers has been focused on the research that will identify various causal factors which can be attributed to the performance of the learners in this aspect of chemistry. Also, very few experimental studies, has been carried out to improve students’ performance. In order to find the right bases for all research that will improve students’ achievement, there is a need to profile the misconceptions in the aspect of physical chemistry which is chemical equilibrium. The purpose of this study is to determine students’ misconceptions regarding the concepts of chemical equilibrium. To diagnose students' misconceptions in this area, a two-tier multiple-choice question on chemical equilibrium test was administered to 300 high school students in Ilesa Metropolis of Osun- state, Nigeria. Descriptive analysis was used in analyzing the data, students’ responses in a Chemical Equilibrium Misconception Test (CEMT) were categorized. The results revealed widespread misconceptions among students in the areas related to (1) equilibrium constant (2) heterogeneous Equilibrium (3) Approach to chemical equilibrium, (4) Application of Le-Chatelier Principle and (5) adding a catalyst.
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