Formulas: Hon Wai Lau's examples
Hon Wai Lau's examples
Example 1.1: Minimal question
For a minimal question, you must define a sub-question with:
- mark
- answer
- grading criteria
- question text (optional)
General Question name! Minimal question Main question Question text! What is 2 + 2? Part 1 Part's mark* 1 Answer type Number Answer* 4 Grading criteria* Relative error < 0.01
The Formulas question should look like this:
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Example 1.2: Generate random data
Random data can be defined in the random variables, such as a = {2,3,4,5}. Upon quiz generation, one deterministic value will be chosen.
General
Question name! Generate random data
Variables
Random variables a = {2,3,4,5};
Main question
Question text! In this instantiation, a takes the value {a}.
Part 1
Part's mark* 1
Answer type Number
Answer* a
Grading criteria* Relative error < 0.01
Part's text Enter the value of a:
The Formulas question should look like this:
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Example 1.3: Multiple parts
By default, all parts will be added at the end of the question. If placeholders are used, the parts will be inserted at the location of placeholders.
General
Question name Multiple parts
Main question
Question text This is the beginning of the main question text.
{#1}
This is the continuation of the main question text.
{#2}
This is the continuation and the end of the main question text.
Part 1
Part's mark 1
Answer type Number
Answer 3
Grading criteria Relative error < 0.01
Placeholder name #1
Part's text This is the text of Part 1. The correct answer is 3:
Part 2
Part's mark 1
Answer type Number
Answer 1
Grading criteria Relative error < 0.01
Placeholder name #2
Part's text This is the text of Part 2. The correct answer is 1:
Part 3
Part's mark 1
Answer type Number
Answer 4
Grading criteria Relative error < 0.01
Part's text This is the text of Part 3. The correct answer is 4:
With the question behaviour set to Interactive with multiple tries, the Formulas question should look like this:
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With the question behaviour set to Adaptive mode, the Formulas question should look like this:
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An important advantage of the Adaptive mode behaviour is that all the answers do not have to be entered before they can be checked by clicking the Check button. Thus, the answers for each part can be checked one at a time or as they are entered.
Example 1.4: Placeholders of numbers and unit
This question shows different display methods of the number and unit boxes.
General
Question name 04 Placeholders of numbers and unit
Variables
Random variables v = {20:100:10};
dt = {2:6};
Global variables s = v*dt;
Main question
Question text If a car travels {s} m in {dt} s, what is the speed of the car?
Part 1
Part's mark 1
Answer type Number
Answer v
Grading criteria Relative error < 0.01
Unit m/s
Part's text Number box and unit box side by side
{_0}{_u}
Part 2
Part's mark 1
Answer type Number
Answer v
Grading criteria Relative error < 0.01
Unit m/s
Part's text Number box and unit box side by side
{_0} {_u}
Part 3
Part's mark 1
Answer type Number
Answer v
Grading criteria Relative error < 0.01
Unit m/s
Part's text No unit box
{_0} m/s
Part 4
Part's mark 1
Answer type Number
Answer v
Grading criteria Relative error < 0.01
Unit m/s
Part's text No unit box
speed = {_0} m/s
The Formulas question should look like this:
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Example 3.2: Multiple and within range
This question is similar to Example: Multiples of 7 between 10 and 100 (Mark = 0, 0.5 or 1), except that the multiples are multiple of a variable d which can be 5, 6, 7, 8 or 9, and that the range is variable by requiring that x satisfies a < x < b where a = k*d-3, b = (k+2)*d-2 and k ranges from 4 to 9.
General
Question name 3.2 Variable multiple and range
Variables
Random variables k = {4:10:1};
d = {5,6,7,8,9};
Global variables a = k*d-3;
b = (k+2)*d-2;
Main question
Question text Two Grading criteria are defined here, each of which is worth half a mark.
Part 1
Part's mark* 1
Answer type Number
Answer* k*d
Grading variables criterion1 = _0 % d == 0;
criterion2 = a <= _0 && _0 <= b;
Grading criteria (criterion1 + criterion2)/2
Part's text Give a number x that is a multiple of {d} and satisties {a} < x < {b}:
The Formulas question should look like this:
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