Fórmulas: Sustitutos para partes

Los sustitutos para partes son útiles para insertar el texto de las partes y cuadros de respuestas en puntos específicos de la pregunta. Hay dos tipos de sustitutos para partes:

• part's text placeholder (discussed below)
• answer box placeholder (discussed on the next page)

The part's text placeholder allows inserting the text of a part at a particular point in the main question. The placeholder name is a string starting with # and followed by a string of alphanumeric characters [A-Z a-z 0-9], such as #1, #a, #a1, #1a, #SubQuestion01, etc. Note that although the designation of the part's text placeholders is quite flexible, a simple designation such as #1, #2, #3, etc. is often sufficient.

At the point of insertion into the main question text, the placeholder name must be enclosed by curly braces { }. In the parts, the placeholder name is specified in the field called Placeholder name.

Example

Use part's text placeholders in the main question to insert the text of three parts.

General
  Question name*       A formulas question with three parts and part's text placeholders
Main question
  Question text*       With part's text placeholders
                       Two subquestions on addition:
                       {#1a}
                       {#1b}
                       One subquestion on subtraction:
                       {#2}
Part 1
  Part's mark*         1
  Answer type          Number
  Answer*              7
  Grading criteria*    Absolute error == 0
  Placeholder name     #1a
  Part's text          What is 3 + 4?
Part 2
  Part's mark*         1
  Answer type          Number
  Answer*              9
  Grading criteria*    Absolute error == 0
  Placeholder name     #1b
  Part's text          What is 4 + 5?
Part 3
  Part's mark*         1
  Answer type          Number
  Answer*              3
  Grading criteria*    Absolute error == 0
  Placeholder name     #2
  Part's text          What is 9 − 6?

The formulas question should look like this:

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The same question can be obtained as follows. However, it is usually easier to use placeholders as above.

General
  Question name*       A formulas question with three parts and no part's text placeholders
Main question
  Question text*       Without part's text placeholders
                       Note: In general, it is more convenient to use placeholders as is done above.
Part 1
  Part's mark*         1
  Answer type          Number
  Answer*              7
  Grading criteria*    Absolute error == 0
  Placeholder name
  Part's text          Two subquestions on the addition:
                       What is 3 + 4?
Part 2
  Part's mark*         1
  Answer type          Number
  Answer*              9
  Grading criteria*    Absolute error == 0
  Placeholder name
  Part's text          What is 4 + 5?
Part 3
  Part's mark*         1
  Answer type          Number
  Answer*              3
  Grading criteria*    Absolute error == 0
  Placeholder name
  Part's text          One subquestion on the subtraction:
                       What is 9 − 6?

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