Christian Lawson-Perfect

This question shows how the number entry part marking algorithm has changed to award credit when the student gives the correct answer but to too much precision, when the precise value is not included in the rounded-off range of acceptable answers.

See this issue on GitHub.

Student is given two whole numbers to add, they have to give the sum.

The numbers are in the range -9 to 9.

Draws a triangle based on 3 side lengths.

Add two numbers. Sometimes one of them is negative.

Add two numbers. Sometimes one of them is negative.

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The easiest type of exponential to graph where the base is greater than 1 and no transformations take place.

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Questions used in my slides for my EAMS 2016 keynote.

A selection of questions which use the "random person" extension to randomise the names of people in the question text.

Parts with zero marks now show a tick or cross as appropriate, even though they don't contribute to the total score.

See github issue https://github.com/numbas/editor/issues/147

Find a regression equation.

Now includes a graph of the regression line and another interactive graph gives users the opportunity to move the regression line around. Could be used for allowing users to experiment with what they think the line should be and see how this compares with the calculated line.

Statements about the different kinds of averages where you have to select "always", "sometimes", or "never".

The question created during the "Write your first question" tutorial.

Some impossible-looking questions about quadratic equations which can be solved with a bit of thinking.

Substitute the numeric or algebraic definition of a variable into different expressions. 

A random heating question, that randomly picks a material, and then heats it through either one or two phase changes, provides an example graph of the heating with scaled temperature ranges (though not with scaled latent and specific heats), and a table with the suitable constants.

Given a set of curves on axes, generated from a function and its first two derivatives, identify which curve corresponds to which derivative.

Based on section 3 of the maths-aid/mathcentre workbook on numerical reasoning.

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Tiny demo question for the polynomials extension.

It's important to wrap the student's answer in polynomial() in the marking script, otherwise the marking doesn't work.

Questions about percentage and ratio, applied to finance.

Based on section 3.2 of the Maths-Aid workbook on numerical reasoning.

Three items of work done on a car. Given total price, and a couple of ratios of prices between pairs of items, work out the cost of one of the items.

Based on question 4 from section 3 of the Maths-Aid workbook on numerical reasoning.

Given ratio of ingredients in a preparation, and amounts of each ingredient, work out how much of the preparation you can make.

Based on question 5 from section 3 of the maths-aid workbook on numerical reasoning.

Compute the weighted average salary in a department, given four salary levels and the percentages of staff earning them.

Following part 2, "Questions on Data Tables", from the Maths Aid workbook "Numerical reasoning tests".

Only doing the first 4 questions because the others involve trends that need lots more thinking about how to randomise.

Not finished!

Scale a page to some percentage of its original size, then increase/decrease by another percentage. Find the size of the final copy as a percentage of the original.

Based on question 2 from section 3 of the Maths-Aid workbook on numerical reasoning.

Given the selling price of an item both as a cash amount and as a percentage of the cost of production, find the cost of production and the profit.

Based on question 1 from section 3 of the Maths-Aid workbook on numerical reasoning.

Given cost of production and price of sale of a product; a percentage increase in cost of production; and unit sales before and after; work out the extra profit.

Based on question 6 from section 3 of the maths-aid workbook on numerical reasoning.