This web page lets you quickly type a sentence on a pupils device and mix it up from them to sort out.
I’ve also a system to create links to that page that will have a particular sentence already created. Example.
I might made the page creation a little easier and also add a QR code creator: Mix Up Maker – Make a Cutup sentence or story. This means I can create a set of mixed up sentences and either send out the links via AirDrop or in a note or alternatively print one or more QR codes.