Algorithm Question Type

A quiz question in which the student draws an algorithm as a flowchart and can run it before submitting. With tests, the answer is graded automatically.

Features

• Draw the algorithm with the same editor as in TinyMCE, with Run / Step, variable watch and generated code.
• Runnable review: the teacher can run and step through the submitted diagram while grading.
• Automatic grading: the teacher enters only the test inputs; the expected outputs are computed from the teacher's solution. Without tests the answer is graded manually.
• Hidden tests and required structures (If, For, While, Do loop, array).
• Analyse an algorithm: put an interactive diagram in the question text (needs filter_algorithm).

What's new in 1.1.0

• Keyboard: the question can be answered without a mouse (with tiny_algorithm 1.1), and Enter in a field of the editor no longer submits the quiz page.
• Error messages of the algorithm are in the user's language, in the attempt and in the review (the server translates them too).
• Opening a question with a starting template no longer counts as an answer, and a saved answer is no longer marked as changed when the page loads.
• Limits that keep grading fast: at most 2000 blocks per answer and 100000 elements per array; a larger answer is reported to the student.
• Unit tests (question, question type, Moodle XML, tester) and screenshots.

Requirements

• Moodle 4.5 LTS to 5.3 (PHP as required by your Moodle version; tested on all of them).
• The tiny_algorithm plugin, version 1.1.0 or newer; filter_algorithm is optional (interactive diagrams in question text).

Privacy

The student's answer is stored by the Moodle question engine like any other answer; the diagram runs in the browser and, for automatic grading, on your Moodle server; nothing is sent to external services. Test inputs and options are stored with the question. The plugin implements the Moodle Privacy API.

Languages: English and Serbian (Latin and Cyrillic). Source, documentation and issue tracker: github.com/blagojevicboban/moodle-qtype_algorithm. Licensed under the GNU GPL v3 or later.