MouseMatics: Learning Math the Fun Way. Workbook of Logic Problems for children ages 6-7 (Volume 2)
MouseMatics 7-8: Unusual Math For 7-8 year olds (Volume 6) (Russian Edition)
MouseMatics: Learning Math the Fun Way. Workbook of Logic Problems for children ages 5-6 (Volume 1)
MouseMatics: Learning Math the Fun Way (Volume 4)
Cake with math (Russian Edition)