129 results in Demos - search across all projects.
-
Question
Demonstration of the written number extension, which converts whole numbers to words.
-
Exam (8 questions)
A collection of questions to show off at a workshop for the North East and Yorkshire sigma hub, June 2016.
-
Exam (2 questions)
No description given
-
Exam (7 questions)
Some questions to show off features of Numbas, linked from the Numbas homepage.
-
Question
Three equilateral triangles are divided equally into 3, 4 and 5 parts respectively. Calculate the distance between two marked points.
-
Question
Taken from question 37 of the book Problem Solving in GCSE Mathematics by Daniel Griller.
Given bearings and lengths of two straight lines, work out the bearing and distance back to the starting point.
A Eukleides diagram shows the setup visually.
-
Exam (8 questions)
A collection of questions to show off at a workshop for Newcastle's LTDS, June 2016.
-
Exam (3 questions)
A few questions which show off the new matrix entry part.
-
Exam (5 questions)
Some questions which demonstrate the adaptive marking feature.
-
Exam (4 questions)
No description given
-
Exam (4 questions)
No description given
-
Exam (2 questions)A couple of questions demonstrating the use of the Eukleides extension to create geometrical drawings.
-
Exam (6 questions)
Numbas demo questions for NUTELA meeting, December 2017.
-
Question
No description given
-
Question
No description given
-
Exam (6 questions)
Some questions to show off features of Numbas, linked from the Numbas homepage.
-
Exam (6 questions)
Some questions demonstrating new features in Numbas v4.0: pattern-matching, inference of variable types in mathematical expression parts, and marking equations.
-
QuestionThis question contains several mathematical expression parts which only compare part of the student's answer with the corresponding part of the expected answer, because the expression can't be evaluated as a whole.
-
Question
In this question, the correct answers can't be evaluated by substituting numbers for each of the variables.
Numbas can now infer the types of variables in the answers to mathematical expression parts, so questions like this can be marked.
-
Question
The student is asked to enter an approximation to $\sqrt{n}$, where $n$ is not a square number, to 20 decimal places.
This question is a demonstration of the high precision arithmetic in Numbas v4.
-
Question
The student is asked to give the Avogadro constant in scientific form, calculate the mass of a number of moles of carbon, in grams, and then calculate the number of molecules in that mass.
This is a demonstration of the high-precision decimal arithmetic in Numbas v4.0.
-
QuestionAn interactive experiment about probability: the student must first 'design' the experiment by deciding how many times they're going to flip a coin, and define what number of heads would make them believe the coin is biased. They must then enter the results of their coin flips, calculate the percentage of heads, and finally decide if the coin is biased, using the condition they specified in the design stage. There are optional hints at each stage.
-
QuestionAn example of an iterative procedure: the student must factorise a given number. At each step, they're asked if the number is factorised. If not, they must give a prime factor. If it is fully factorised, they can then work out the number of factors of the number.
-
QuestionThis question demonstrates how to use explore mode to simulate a game, where each choice made by the student changes the state of the game.
-
QuestionThis question shows how to reveal a part if the student enters an incorrect answer that you're expecting - in this case, by not following the order of operations.
-
QuestionThis question demonstrates how to lock a part in explore mode after moving to the next part, to prevent the student changing their answer and invalidating the rest of the question.
-
QuestionAn interactive activity: the student enters the dimensions of a parcel, then has to calculate its volume, and classify its size by comparing against a table of maximum dimensions.
-
QuestionThis question demonstrates how you can offer a selection of hints, with each giving a different level of detail and applying a different penalty.
-
QuestionThe student is asked to identify the number of roots of a quadratic equation, and then to give the root or roots. There is a hint to calculate the discriminant, and then further hints with the formula for the discriminant and the decision to make based on its value.
-
Question
The student must calculate the number of digits a given decimal number would have when written in a different base. Alternative answers catch some common mal-rules and give appropriate feedback.
Based on table 2 from "diagnosing student errors in e-assessment questions" by Philip Walker, D. Rhys Gwynllyw and Karen L. Henderson.