Texas Instruments touted the use of its TI-Navigator graphing calculator solution, calling it an effective tool for getting students to learn--and talk about--mathematics. The company provided evidence of Navigator's success by way of an expanding pilot project in the 34,000-student Richardson Independent School District (RISD) in Texas. Administrators say at-risk middle school students participating in the intervention demonstrated a 33-percent increase in statewide standardized test scores in mathematics compared with the previous year. Use of the Navigator system, which enables teachers to deliver targeted, on-the-spot assessments and drill-and-practice exercises, was critical in boosting scores and raising the interest level of...

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