  The Open Source Physics community has created hundreds of physics computer
models (Wolfgang Christian, Esquembre, & Barbato, 2011; F. K. Hwang &
Esquembre, 2003) which are mathematical computation representations of
real-life Physics phenomenon. Since the source codes are available and can be
modified for redistribution licensed Creative Commons Attribution or other
compatible copyrights like GNU General Public License (GPL), educators can
customize (Wee & Mak, 2009) these models for more targeted productive (Wee,
2012) activities for their classroom teaching and redistribute them to benefit
all humankind. In this interactive event, we will share the basics of using the
free authoring toolkit called Easy Java Simulation (W. Christian, Esquembre, &
Mason, 2010; Esquembre, 2010) so that participants can modify the open source
computer models for their own learning and teaching needs. These computer
models has the potential to provide the experience and context, essential for
deepening students conceptual understanding of Physics through student centred
guided inquiry approach (Eick, Meadows, & Balkcom, 2005; Jackson, Dukerich, &
Hestenes, 2008; McDermott, Shaffer, & Rosenquist, 1995; Wee, Lee, & Goh, 2011).
