Texas Instruments TI-30XA SCI Calculator. 10-Digit Scientific Calculator is ideal for general math, pre-algebra, algebra 1 and 2, trigonometry and biology. Performs trigonometric functions, logarithms, roots, powers, reciprocals, and factorials. One-variable statistics include results for mean and standard deviation. Adds, subtracts, multiplies, and divides fractions entered in traditional numerator/denominator format. Conversions include fractions/decimals, degrees/radians/grads, DMS/decimal/degrees, and polar/rectangular. Battery powered. Calculator includes slide case.