Students learning about real numbers. Yes seriously. Unlike software engineers who have already studied IEEE754 numbers, you can't expect a middle school stude

Students learning about real numbers. Yes seriously. Unlike software engineers who have already studied IEEE754 numbers, you can't expect a middle school student to know concepts like catastrophic cancellation. But a middle school student wants to poke around with trigonometric functions and pi to study their properties, but a true computer algebra system might not be available to them. They might not understand that a random calculator app doesn't behave correctly because it's not using the same kind of numbers discussed in their math class.