Data were gathered through questionnaires and achievement tests. Four schools were sampled and were divided into two control and two experimental groups through a purposive sampling technique. The study participants were 176 students and four teachers. The research adopted the Technology Acceptance Model of which the quasi-experimental research design was used with pre-post testing procedures. This paper shares findings from the study aimed to establish the effect of Desmos Graphing Calculator on secondary school learners’ conceptual understanding of geometry in Kiambu County, Kenya. Over time, a variety of tools and initiatives have been employed to aid pupils in understanding geometry concepts. One of the mathematics strands where students struggle is geometry. The use of Desmos Graphing Calculator (DGC) software in secondary schools’ geometry education has the potential to improve learners’ conceptual understanding. Received: 18 April 2023 Accepted: Published: 14 June 2023 ABSTRACT Oradoĭepartment of Educational Communication and Technology, Kenyatta University, Kenya Jimmy George, Marguerite Miheso- O’Connor & Grace N. Use of Desmos Graphing Calculator in Teaching Geometry and its Effect on Secondary Schools Learners’ Conceptual Understanding, Kiambu County, Kenya
