Perhaps put "data cleaning" lab later, get the students working on clean data first?

[oskarflygare]

We've experienced many roadblocks for the students since they have to start with quite complex data cleaning procedures, rather than starting with clean data and teaching concepts.

[oskarflygare]

Students also asked for a more thorough introduction to R before diving into the exercises. Showing functions/objects/help panel etc. Showing the RStudio GUI, what goes where.