In general the bigger things are the better they are. This Giant Calculator  reinforces that trend and altogether is a pretty good and rather large calculator.

Doing sums is boring but doing them on this calculator makes it more fun and probably a bit quicker unless you're one of those freaky people that don't have to look at the keypad to see what they're typing.

At nearly 12" x 9" it's certainly quite large. It has all the standard buttons you would expect to find on a standard calculator.