  This paper is on customization of computer models using the Easy Java
Simulation authoring toolkit for the Singapore syllabus, based on real
astronomical data, supported with literature reviewed researched pedagogical
features. These 4 new computer models serves to support the enactment of
scientific work that are inquiry centric and evidence based that are more
likely to promote enjoyment and inspire imagination having experienced
gravity-physics than traditional pen and paper problem solving. Pilot research
suggests students enactment of investigative learning like scientist is now
possible, where gravity-physics comes alive.
