Resetting the TI.15 Pressing − and ” simultaneously or pressing ‡, selecting RESET, selecting Y (yes), and then pressing ® resets the calculator.Click to see full answer. In respect to this, is the TI 15 a scientific calculator?The Texas Instruments TI-15 allows conversions between fractions, decimals, percentages, and between improper fractions and mixed numbers. With this Texas Instruments scientific calculator, fractions can be simplified automatically or solve it methodically step by step.Also Know, is the TI 30xa a scientific calculator? The TI-30Xa scientific calculator is approved for use on SAT*, ACT*, and AP* exams. Also to know, how do I get my calculator out of fix mode? Press the “Mode” key repeatedly until a menu with “Fix” “Sci” and “Norm” appear on the screen. Each listing has a number underneath.What is a TI 15 calculator?TI-15 Explorer is a calculator designed by Texas Instruments, intended for use in classes from grades 3-5. Features include a 2-line pixel display (as opposed to the 7-segment display of several other calculators), and a quiz-like “problem-solving” mode.