By popular demand: A step-by-step description of the overturning experiment discussed here and here.
I wrote this description a while ago and can’t be bothered to transfer it into the blog format, so please go and find a .pdf here. This .pdf addresses young children in the first part, and grown-ups in the second part.
Have fun and if you use this in school or with your own kid, please let me know how it went! I love to hear from my readers! :-)