White, P' 1996' Conceptual knowledge in introductory calculus'
https://www.powershow.com/view1/1db295-ZDc1Z/White_P_1996_Conceptual_knowledge_in_introductory_calculus_powerpoint_ppt_presentation
Icons create by Freepik from www.flaticon.com/
Icons create by Freepik from www.flaticon.com/