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**Principal Investigator:** Andee Rubin

**Funders:** National Science Foundation

**Website:** http://tma.mit.edu/

In collaboration with MIT and leading= mathematics educators studying early algebraic reasoning,TERC is designing= and implementing a computational toolset with which elementary students ca= n construct and share mathematical proofs in the service of learning to be = competent algebraic reasoners. These tools will be developed and tested wit= hin an existing tablet-based computational infrastructure that supports the= sharing of student work as a basis for class discussion.