Mohd Razali F, Abdul Aziz NA, Salim SA, Mohamad Rasli R, Zulkefly NF. The effects of free rotate gestures in multi-touch screen design on childrens’ achievement in learning shape for pre-school children. SAECJ [Internet]. 2017 Oct. 9 [cited 2024 Nov. 21];6:19-26. Available from: https://ojs.upsi.edu.my/index.php/SAECJ/article/view/997