Most people know about Wikipedia but did you know all of its images are sourced from a giant resource of media, all of it licensed for reuse? Let’s explore Wikimedia Commons to find something you might be able to use in a class you take or teach.
It took 6 clicks to find this animation of an algorithm solving Sudoku that looks like a great opening for my week 8 lecture on algorithms.
Start from the main Wikimedia Commons site, looking for the column labeled Content.
It may take a lot of drilling down, but start with the subject/content area you are interested in. Here is the path to find the example above.
- I’ll start with Mathematics
- Then I bet there is something useful in Mathematical Concepts
- Hmmm, 4 choices. Algorithms are in the news a lot. What’s there?
- A lot of things. You might notice that for each entry, say for Search Algorithm includes after the link
(15 C, 80 F). This tells me at that link I will find another 15 categories and 80 files. Still rather broad.
- I find here Animations of search algorithms (1 C, 15 F) so I should be close to finding something I can use.
- And finally, the idea of an algorithm solving Sodoku looks like a way to introduce to my week 8 class:
Sudoku puzzle solved by a brute force/backtracking algorithm. The algorithm started by filling the first empty cells with the values 1 – 9 until one of them created a valid board and moved on from there backtracking whenever doing this could not create a valid board. Program written in Java.
Now I need to do some more research on backtracking algorithms… (that’s another extend!)