Quick expression examples
| Task | Expression | Expected result |
|---|---|---|
| Sine in degree mode | sin(30) | 0.5 |
| Fraction arithmetic | 3/4 + 5/8 | 1.375 or 11/8 |
| Scientific notation | 6.02e23 / 2 | 3.01e23 |
| Combination | nCr(12,3) | 220 |
| Mixed number | mixed(2,1,3) | 2⅓ |
| Implicit multiplication | 2pi + 3(4+1) | 21.283… |
Designed for privacy and reliability
Calculations run in the browser. Expression history, angle mode and formatting preferences are stored locally on the current device. They are not submitted to Calc for Class.
Frequently asked questions
Does it work on a phone?
Yes. The application rearranges into a full-width calculator with touch-friendly keys, a sticky tool panel and a full-screen option.
Can it show fractions?
Yes. Calculate the expression and choose Show fraction. The calculator uses a continued-fraction approximation with a practical denominator limit.
What is the difference between degree and radian mode?
Degree mode treats a full turn as 360 units. Radian mode treats a full turn as 2π units. Match the mode to the notation used in the problem.
Is this a TI-30XS emulator?
No. It is an original Calc for Class calculator that supports many of the same classroom tasks through a browser-first interface.