In the UK schools are finishing for the summer, some have already completed school for the year.
What to do for those last lessons?
No videos – though I could make an exception for the counting chimps, a video I was introduced to by Alex Bellos at the SSAT conference which he included in his session and shows the astonishing recall of a chimp – compare the human!
Some Mathematical games and puzzles perhaps? There are plenty to choose from.
Maybe….

Note that as well as downloading the application it is possible to download selections of puzzles from Craig Barton and from Bryan Dye.