Developing children's FMS and executive function is a critical aspect of early childhood. The aim was to evaluate the fundamental movement skills (FMS) and executive function. The objectives were to investigate the locomotor and object control skills as well as inhibitory control and working memory of the selected children. Grade 1 (6-8-years-old) learners (N = 157) in Cape Town, South Africa were assessed with the Test for Gross Motor Development (TGMD-2) and Head Toes Knees and Shoulder task, before and after a 6-week active brain-break intervention. Participants were divided into a control (n = 53) and an experimental (n = 104) group. The results indicated an overall statistically significant difference (p < 0.05) for pre- and post-testing in both groups for FMS executive functioning (p < 0.01).The results highlight the importance of exposing Grade 1 learners to FMS and physical activity bouts during academic lessons to create opportunities for movement, development of FMS and enhancement of executive functioning.