Hannah happened to be visiting (at tea time suprisingly!!) and I got her to make signs for Isaac to copy while I took photos
so proudly presenting Isaac signing.....
book (hands together then fan apart like a book)
mummy (the 3 fingers used to fingerspell M but on the head rather than hand as this is easier for small children)
bed (hand to side of face)
Noah (2 fingers like fingerspelling N but on nose as Noah sounds like nose)