73 results authored by Johan Maertens - search across all users.

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• Question

Show a list of the factors of a number.

Works by testing each number up to $n$ for divisibility by $n$, so won't do well with really big numbers. Certainly fast enough for numbers up to 4 or 5 digits.

• Question

Simple exercises introducing the fundamental set operations, and NUMBAS syntax for sets.

• Question

This question is made up of 10 exercises to practice the expansion of brackets.

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This question aims to test understanding and ability to use the laws of indices.

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• Question

All the answers in this question are equations. In order to mark each equation, Numbas needs to pick some values that satisfy the equation and some that don't, and check that the student's answer agrees with the expected answer.

Any equation with the same solution set as the expected answer will be marked correct.

• Question
The student must expand an expression of the form $(x+a)(x+b)(x+c)$. A pattern restriction ensures there are no brackets in their answer.
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Simplifying algebraic expressions

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This question provides a list of data to the student. They are asked to find the mean, median, mode and range.

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Convert a metric measurement to another order of magnitude, e.g. g to kg.

• Question

Convert a metric measurement to another order of magnitude, e.g. g to kg.

• Exam (4 questions)

Some questions that use the quantities extension to handle units.

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Kwadraten van 0 t.e.m. 15 oefenen.

• Question

Show a list of the factors of a number.

Works by testing each number up to $n$ for divisibility by $n$, so won't do well with really big numbers. Certainly fast enough for numbers up to 4 or 5 digits.

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Fiddling about with a new extension providing a "quantity" data type: an amount with units.

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Examples of the following custom part types: Yes/no, List of numbers, Give a numerical input for an expression, Number entry modulo.

• Question

Numbas can now understand and use several different styles of notation for numbers.

This question shows off all the supported styles, both for display in text and in the answers to number entry parts.

• Question

Lay out gapfills so the student has to enter either the numerator or denominator of a fraction.

• Question

Some custom CSS restyles the matrix input so it looks like a fraction, with input boxes on top and bottom.

Ideally, there should be a fraction input part type, or an option for the number entry part to display a fraction input.

• Exam (8 questions)

9 questions: Expanding out expressions such  $(ax+b)(cx+d)$ etc.