Publications

Research articles, conference papers, and other scholarly works by Charles Siaw Obeng.

Charles Siaw Obeng Charles Siaw Obeng Mathematics Education Researcher
1

Van Hiele Geometric Thinking Levels among Senior High School Students in Ghana: Evidence from the Asante Akim South Municipality

Charles Siaw Obeng

Journal: Applied Mathematics (2026)

Keywords: Van Hiele, geometric thinking, mathematics education, senior high school, Ghana

Abstract: This study investigated the Van Hiele geometric thinking levels among Year Three second-cycle students in the Asante Akim South Municipality of Ghana. The findings revealed that the majority of students were at the Analysis level (Level 2) of the Van Hiele model.

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2

Gender Differences in Van Hiele Geometric Thinking Levels Among Ghanaian Senior High School Students

Charles Siaw Obeng

Journal: International Journal of Mathematics Education (2025)

Keywords: Gender, Van Hiele, geometric thinking, mathematics education, Ghana

Abstract: This study examined gender differences in the geometric thinking levels of senior high school students in Ghana using the Van Hiele model. The study involved 320 Year Three students and examined differences in students' geometric thinking levels by gender.

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3

School Context and Students' Geometric Thinking Levels: Evidence from Three Ghanaian Senior High Schools

Charles Siaw Obeng

Journal: Research Publication (2026)

Keywords: School context, geometric thinking, Van Hiele, senior high schools, Ghana

Abstract: This quantitative study examined differences in students' geometric thinking levels across three Ghanaian senior high schools. The study involved 320 students and used the Van Hiele Geometry Test. School-level differences in geometric thinking were examined using descriptive statistics and one-way ANOVA.

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4

Age and Geometric Thinking among Senior High School Students: A Correlational Study Using the Van Hiele Model

Charles Siaw Obeng

Keywords: Age, geometric thinking, Van Hiele model, senior high school students, Ghana

Abstract: This study investigated the geometric thinking levels of Year Three Senior High School students in the Asante Akim South Municipality, Ghana, using the Van Hiele model. A quantitative descriptive cross-sectional research design was adopted, involving 320 students selected from three public senior high schools. Pearson correlation analysis revealed a weak but statistically significant positive relationship between age and geometric thinking level (r = .24, p = .001).

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5

Database System Literacy and Mathematics Achievement among Senior High School Students in the Asante Akim South Municipality: A Quantitative Study

Charles Siaw Obeng

Keywords: Database literacy, mathematics achievement, ICT education, quantitative research, senior high school students

Abstract: This study investigated the relationship between database system literacy and mathematics achievement among Senior High School students in the Asante Akim South Municipality of Ghana. A quantitative cross-sectional survey design was used with 320 students selected from three public Senior High Schools. The findings showed a moderate level of database system literacy (M = 3.24, SD = 0.71) and a positive statistically significant relationship between database system literacy and mathematics achievement (r = .48, p < .001).

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6

Van Hiele Geometric Thinking Levels and Senior High School Students' Mathematical Modelling Competence in Analyzing Infant Mortality Trends: A Quantitative Study Using Data from Juaso Government Hospital

Charles Siaw Obeng

Keywords: Van Hiele theory, mathematical modelling, infant mortality, mathematics education, quantitative research

Abstract: This study investigated the relationship between Van Hiele geometric thinking levels and students' mathematical modelling competence using infant mortality data from Juaso Government Hospital. A quantitative correlational design was employed with 320 Senior High School students. The results showed a significant positive relationship between Van Hiele levels and mathematical modelling competence (r = .62, p < .001), and Van Hiele levels significantly predicted students' ability to analyze mortality trends.

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7

Van Hiele Geometric Thinking Levels as Predictors of Students' Performance in Metal Casting Projects in Technical Education Institutions

Charles Siaw Obeng

Keywords: Van Hiele theory, geometric thinking, metal casting, foundry technology, technical education, quantitative research

Abstract: This study investigates the relationship between students' Van Hiele geometric thinking levels and their performance in metal casting projects in technical education institutions. The study adopts a quantitative cross-sectional correlational design involving technical education students enrolled in foundry and metal casting courses. The proposed study examines whether geometric reasoning contributes to pattern design, mold preparation, dimensional accuracy and overall project quality.

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Books & Workbooks

Academic books, learning resources and workbooks by Charles Siaw Obeng.

Physics Notes for WASSCE Physics

PHYSICS NOTES

BNK SERIES
Charles Siaw Obeng
BRIEF
Further Mathematics Mathematics

Further Mathematics

BNK SERIES
Charles Siaw Obeng
BRIEF
Mathematics Workbook Mathematics

Mathematics Workbook

BENKUMHENE SERIES
Charles Siaw Obeng
GOOD

About the Books & Workbooks

This section provides access to academic books, mathematics resources, physics materials and workbooks prepared for students and other learners. Readers can view supported books directly online using the interactive book reader or download the available PDF version.

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