T-algebra is an interactive learning environment for exercises in four areas of school algebra (Grades 4-8): calculation of the values of numerical expressions; operations with fractions; solving of linear equations, inequalities and linear equation systems; operations with monomials and polynomials. T-algebra implements 61 task types. The student solves the task step by step. At each solution step the student selects the operation, indicates the subexpression(s) to be changed and enters the result of conversion. The program checks all three stages of the step, gives feedback and hints. The program records the information about the solution process and mistakes.
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- Prank, Rein; Lepp, Dmitri: Tools for acquiring data about student work in interactive learning environment T-algebra (2010) ioport