SMMconstructor is an online construction kit for building animated models. Based on the original construction kit called Sodaconstructor, this simulator lets you construct virtual models with a few construction pieces that you drag and snap together. You can also change the movement of your creation by adjusting gravity, friction, and spring stiffness, or just by dragging, pulling and moving the models. The SMMconstructor is a great way to explore simple movement in animation, and to explore concepts such as mass and acceleration. SMMconstructor also can let the learner begin to explore the meaning and implication of simulations - what they are and how humans make things that let us explore and learn about ourselves.