655 results authored by Christian Lawson-Perfect - search across all users.
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The student is shown a Cartesian diagram containing a point $P$ and a circle. They must move the point and change its radius so that the point $P$ is touching the circle.
They can type the radius and coordinates in, or move the circle around on the diagram.
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The student is shown a diagram containing a single point at the origin. They must move the point to the given integer coordinates.
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A 2D linear programming problem: optimise the profit from producing two different kinds of product, which both use the same limited resources.
A JSXGraph diagram illustrates the problem and can be used to find an answer.
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The student is shown a diagram containing a line between two points. They're given a gradient and $y$-intercept.
They must manipulate the line or the points so that the line has the given gradient and $y$-intercept.
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The student must make a spanning tree of the complete graph $K_5$. They can tick boxes to include or exclude edges, or toggle them by clicking on a visual representation of the graph.
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This question shows how to pick a GeoGebra worksheet to show to the student from a list, based on the value of a question variable.
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Question in Using JSXGraph in Numbas - JSXGraph conference 2021 by
Christian Lawson-Perfect
and 1 other
No description given
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Exam (6 questions) in Using JSXGraph in Numbas - JSXGraph conference 2021 by
Christian Lawson-Perfect
and 2 others
Some questions demonstrating the JSXGraph extension, for my talk at the JSXGraph conference 2021.
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Question in Using JSXGraph in Numbas - JSXGraph conference 2021 by
Christian Lawson-Perfect
and 4 others
Solving 2nd order differential equation for pendulum, with and without damping.
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Question in Using JSXGraph in Numbas - JSXGraph conference 2021 by
Christian Lawson-Perfect
and 1 other
The student is shown a diagram containing a single point at the origin. They must move the point to the given integer coordinates.
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Question in Using JSXGraph in Numbas - JSXGraph conference 2021 by
Christian Lawson-Perfect
and 1 other
The student is shown a diagram containing a line between two points. They're given a gradient and $y$-intercept.
They must manipulate the line or the points so that the line has the given gradient and $y$-intercept.
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Compute a table of values for a quadratic function. A JSXgraph plot shows the curve going through the entered values.
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Customised for the Numbas demo exam
Motion under gravity. Object is projected vertically with initial velocity $V\;m/s$. Find time to maximum height and the maximum height. Now includes an interactive plot.
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An experiment is performed twice, each with $5$ outcomes
$x_i,\;y_i,\;i=1,\dots 5$ . Find mean and s.d. of their differences $y_i-x_i,\;i=1,\dots 5$.
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A demo of the gap-fill part and its options.
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Showing off the part types.
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A demonstration of the exam-level variable override feature. The student is shown the same question several times, but each instance is set up to suggest a different error in the process of computing the median of a sample. The first instance is very easy, and the last is pretty hard.
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A question designed to demonstrate the exam-level variable overrides feature. The student must work out the median of a given sample. The exam can override size of the sample, the range of numbers to pick, and whether the sample should be shown to the student in increasing order.
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A few questions showing how to use custom constants in different contexts.
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In this question, the imaginary unit $\sqrt{-1}$ is written as $j$ instead of $i$.
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The letters i, j and k are used to represent the standard 3D unit vectors.
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In this question, $\tau$ represents the ratio of a circle's radius to its circumference, or $2\pi$.
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