648 results authored by Christian Lawson-Perfect - search across all users.
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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.
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The answer to this question is a differential equation involving y″, y' and y.
A variable value generator for y ensures that the right values are tested to check that the student's answer is equivalent to the expected equation.
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This question includes a JavaScript preamble which defines 'hbar' as a special variable name to be rendered in LaTeX as \hbar.
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This question demonstrates how to use the \simplify command to create natural-looking randomised mathematical expressions.
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A demo of how custom marking algorithms can be used to replace the built-in marking methods.
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This question demonstrates a few ways of interacting with a Venn diagram drawn using JSXGraph.
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This question contains many examples of mathematical expression parts which require the student to enter their in a certain form, which is marked by applying a "pattern to match" restriction.
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Given the cost of hiring a room for a given number of hours, compare with competing prices given per hour and per minute.
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Two sample t-test to see if there is a difference between scores on questions between two groups when the questions are asked in a different order.
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No description given
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Given an annual salary, tax allowance, tax rate and pension deduction, work out a person's take-home pay per month.
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Given the stakes of three people in a lottery syndicate, and the amount the syndicate won, work out each person's share of the winnings.
Based on question 4 from section 3.2 of the Maths-Aid workbook on numerical reasoning.
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Several questions on rounding number and using approximations to estimate. Several real-world examples.
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A demonstration of the random person extension, which picks representative names of people.
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A question made for the FYiMaths December meeting, to show off some of the more adventurous things you can do with Numbas.
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An exam set up to produce printed worksheets.
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Made for my TALMO talk. This demonstrates how you can use a part with no marks as an oracle to perform calculations, to help the student check their working.
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Questions shown in my presentation for the Teaching And Learning Mathematics Online session, 16th November 2022.
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This question demonstrates a few ways of interacting with a Venn diagram drawn using JSXGraph.
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Guides the student through the process of writing an integer in binary. They can pick any number they like, then choose from a selection of methods, or just do their own method and have the answer checked.
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Demonstrating a feedback loop in a Numbas part: which of the required properties does your answer satisfy?
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Demonstrating a kind of feedback loop in a Numbas part: you're told how close you are to the correct answer.
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Two parts to demonstrate kinds of feedback loop in a Numbas part: correctness, and refining an answer.
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A line with random x- and y- intercepts is plotted, and you have to drag two dots over the points where the line crosses the x and y axes.
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No description given
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An explore mode activity containing a lot of questions, for students to check their understanding of the information in the "Getting Started" material.
Note: This question was written for students accessing Numbas exams through the Numbas LTI tool. Some of the information does not apply to exams accessed standalone or through a generic SCORM player.
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This question gives information for students on how to answer number entry parts, with some opportunities to try submitting answers.
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Shows how the "decimal" data type can represent very small numbers with more precision than the default "number" data type.
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This question shows how to use the JSXGraph extension to show the student a plot of a function that they enter.
In the first part, the student enters an expression for f(x). Once they've done that, they can reveal a plot of the function.
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This question demonstrates how to plot a graph of a function using JSXGraph.
