Kwok, W. J.; Lim, T. L. STUDENTS’ PERCEPTIONS OF DESIGN-BASED INTERACTIVE LEARNING TOOLS IN A CONSTRUCTIVIST-BASED LEARNING ENVIRONMENT: Received: 8th April 2021; Revised: 26th November 2021, 27th November 2021; Accepted: 1st December 2021. pijtel 2021, 5, 53-67.