TATI is an interface for Second Life that allows for the easy creation of physical microworlds and simulations for physics teaching, as proposed by Papert. It implements different object types that realize Papert's proposed Piagetian learning sequence to move from geometric objects to Newtonian objects. TATI and the TATILogo language aim to provide an exploratory, hands-on way for learners to construct physics concepts like position, velocity, and force, while reducing Second Life's typical steep learning curve. Future work includes implementing remaining TATILogo commands and testing TATI with teachers and students.