2026-10-14T15:39:26Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33789331 2026-09-15T11:36:35Z category_129 portal_316 item_type_3 month_year_09_2026

Supplementary file 1_The impact of GeoGebra®-based dynamic visualization on the mastery of circle theorems among senior high school students.pdf Innocent Akpage (24929803) Asare Charles (24929806) Stephen Daniels Sarfo (24929809) Isaac Davor (24253002) Education circle theorems dynamic visualization GeoGebra® mathematics education non-parametric statistics sign test <p>Students often experience difficulty mastering Circle Theorems because conventional instruction relies on static diagrams that provide limited opportunities to visualize geometric relationships. This study investigated the impact of GeoGebra®-based dynamic visualization on Senior High School (SHS) students' mastery of Circle Theorems using an explanatory mixed-methods quasi-experimental design. Fifty-eight students participated, comprising an experimental group (n = 22) taught with GeoGebra® and a control group (n = 36) receiving conventional instruction. Achievement was assessed using the Circle Theorem Achievement Test, while semi-structured interviews explored students' perceptions of the intervention. Because achievement scores violated normality assumptions, non-parametric procedures were employed. The pre-test Mann–Whitney U-test indicated no significant difference between groups (U = 387.00, p = .882). The Sign Test showed significant improvement in the experimental group (p = .001), while the post-test Mann–Whitney U-test indicated significantly higher achievement among students taught with GeoGebra® (U = 106.50, p < .001, r = .61). Interview findings indicated that dynamic visualization enhanced conceptual understanding, mathematical reasoning, problem-solving, and engagement, despite initial technological challenges. The findings suggest that GeoGebra®-based dynamic visualization can support the teaching and learning of Circle Theorems and should be integrated strategically into mathematics instruction alongside appropriate teacher preparation.</p> 2026-09-15T11:36:35Z Dataset Dataset 10.3389/feduc.2026.1930147.s001 https://figshare.com/articles/dataset/Supplementary_file_1_The_impact_of_GeoGebra_-based_dynamic_visualization_on_the_mastery_of_circle_theorems_among_senior_high_school_students_pdf/33789331 CC BY 4.0