http://ihappymama.ru/risuem-s-detmi-obemnye-izobrazheniya/
6 класс
http://ppt4web.ru/matematika/slozhenie-i-vychitanie-celykh-chisel0.html
https://dl.dropboxusercontent.com/u/18182301/LPK/slozenie%20i%20vo4itanie%206%20klass.pptx
https://dl.dropboxusercontent.com/u/18182301/LPK/slozenie%20i%20vo4itanie%206%20klass%20u4enik.pptx