Pam Versfield is a phsyiotherapist from Cape Town, South Africa. She provides a very useful summary and recommendations on her website.
A very useful article overviewing difficulties children can have with Hypermobile joints and writing.
The videos providing great advice for PE lessons Kids and teens section Research and recommendations
Search this site using ‘Hypermobility’, you can download a free information booklet and there is specific information booklet for Teenagers.