Development:Numerical question units and intervals: Difference between revisions
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Answer 2: [ '''100.4..100.5)''' ] Accepted error ± Grade: | Answer 2: [ '''100.4..100.5)''' ] Accepted error ± Grade: | ||
Which would be interpreted '''110.4 <= right < 100.5''' | Which would be interpreted '''110.4 <= right < 100.5''' | ||
i.e. the round parentheses would mean that boundary not included in intervall | |||
or that one could enter evaluation strings like | or that one could enter evaluation strings like | ||
'''110.4<=ans<100.5||100.5<ans<=100.6''' | '''110.4<=ans<100.5||100.5<ans<=100.6''' |
Revision as of 13:23, 23 November 2006
This is my proposal for how the numerical question function and interface should be improved.
[_]Allow evaluation of expressions
Checking this would accept 5/2 0.5*5 5^2/2 5^(5-3)/2 25*10^-1 sqrt(25)/2
[_]Allow fraction type 2 1/2 as 2.5
[_] Translate "½" as "+.5" but give warning "Avoid ½ character in numerical expressions!"
Answer 1:[ 2.5 ] Accepted error ± [0.5] Grade: [100%] Feedback:
Answer 2: [ 100.4..100.5) ] Accepted error ± Grade:
Which would be interpreted 110.4 <= right < 100.5 i.e. the round parentheses would mean that boundary not included in intervall or that one could enter evaluation strings like 110.4<=ans<100.5||100.5<ans<=100.6 (I know that this particular thing can be addressed by having 100.5 +/-0 first than 100.5 +/-0.1)
Feedback:
.... Answer 10: Accepted error ± Grade: Feedback:
[_] differentiated unit feedback, which is all of:
All of: [_] feedback for lacking unit [_]Feedback for accepted UNIT but wrong number [_] feedback for "possibly right number" if unit is adjusted [_] feedback for "Unit not recognized, either misspelled, wrong type, or just not expected"
Unit: [ ] (optional)
Should accept arrays like kg, kilogram, kilograms , kilogramme, "kilo gram"
Alternative Units: Multiplier:[ ] Unit: [
Should possibly give feedback for misspelling including case errors m milli M Mega
Multiplier: Unit: