Science topics often require students to calculate. Currently Buzz does not offer a possibility to specify an accepted range for an answer. I can either provide choices or to make an essay question, both of which have major disadvantages, and the latter requires a manual checking for correctness. A numerical range would require a student to provide an answer free of major errors, would not be suggestive, would not allow to reverse-engineer an answer, and would provide a much better assessment of understanding.
In addition, it would be very valuable, if we could specify the number of significant digits in an answer.
A screencast with a demo https://drive.google.com/open?id=1YEdntzIahtvVVM4P9Lpey3optVOuO4zm