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Drawing on convergent mixed methods research design, this study examined Junior High School (JHS) mathematics teachers' practice of differentiated instruction and its associated challenges in Tano South district, in the Ahafo Region of Ghana. Simple random sampling technique was used to select 50 JHS mathematics teachers for the quantitative study with the aid of questionnaire, purposive sampling technique was used to solicit qualitative data for the study using interview guide. Inferential statistics and thematic analysis were used to analysis the quantitative and qualitative data respectively. It was generally observed that, there was no significant differences between special and general education teachers practice of differentiated instruction. Therefore, the study recommends that Ghana Education Service (GES) and stakeholders in education should implement professional development and training programmes for both general and special mathematics teachers on differentiated instruction.

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Purpose: Capital asset pricing model (CAPM) has been one of the major asset pricing tools applied on the capital market to price listed securities. Several researchers have challenged the overall efficiency and validity of the model in terms of its ability to explain the behavior of the average returns on the basis of a single variable. The debate is now taking a new trend which aimed at assessing the robustness of the model in varying market conditions and this has been the main focus of the study; that is to determine whether or not CAPM applies to securities on Ghana Stock Exchange at different market conditions.Methodology: Data on monthly returns of 29 shares were selected from the Ghana Stock Exchange spanning from 2010 to 2018 and analyzed using regression analysis on the assumption of constant risk and varying risk situations.Findings: The study evidenced that the systematic risks differ between bulls, tranquil and bear periods. Market conditions therefore have impact on the CAPM model. CAPM is not robust with changes in market conditions after all especially in an emerging market such as the Ghana Stock Exchange.Contribution to theory, practice and policy: The result of this study implies that, the widely accepted CAPM for asset pricing model is not robust to changes in market conditions. It is therefore essential to predict future market conditions when formulating investment strategy as an investor. Again, investors should vary their risk premium depending on their expectation of the market conditions at the time of investment.

This study sought to investigate in-service mathematics teachers’ knowledge of differentiated instruction in junior high schools in Tano South Municipality of Ghana. The study adopted an explanatory sequential mixed method design. We employed a sample of 50 JHS mathematics teachers comprised 41 general in-service teachers and 9 special in-service teachersin the quantitative study through proportionate stratified sampling technique. In the qualitative phase, 6 JHS mathematics teachers comprising 4 general in-service teachers and 2 special in-service teachers were purposively selected and interviewed. In line with the design adopted, the quantitative data obtained through questionnaire was first collected and analysed. This was followed by the qualitative data obtained through semi-structured interviews. The quantitative data were analysed using both descriptive statistical tools (such as frequency counts, percentages, mean, standard deviation and average per item rating), and inferential statistical tool (independent samples t-test). Qualitative data used inductive content analysis. Among the findings, we found no statistically significant difference in the knowledge scores on differentiated instruction for general in-service teachers and special in-service teachers (t = -0.80, df = 48, p 0.05). We therefore recommend teacher education institutions to review their mathematics curriculum to reflect the use of differentiated instructional approaches among mathematics teachers.