What do you mean with "presenting"? If the students don't have any relevant background in mathematics, it would mean to me that you want to show them "how to press a button" so that some obscure input produces some obscure output that can then be published (sort of a cookbook recipe guide).

You may use simulations if you want to focus on understanding (without requiring much maths). You can easily simulate data, calculate order statistics and build up the sampling distribution of these order statistics. You can also take given samples and do bootstrapping. There are plenty resources in the internet.

Hi Natacha,

rcompanion.org is a great source with many examples of non-parametric tests.

sthda.com is also good, but the author uses his own limited packages.

Here are some useful references:

https://www.statmethods.net/stats/nonparametric.html

https://rpubs.com/CPEL/nonparametric

https://www.dataanalytics.org.uk/non-parametric-tests-using-r/