Link to the webpage where we can find the official mathematics curricula.
Top Page(in Japanese):
 http://www.mext.go.jp/a_menu/shotou/youryou/main4_a2.htm
Detailed present curricula(in Japanese):
 http://www.mext.go.jp/b_menu/shuppan/sonota/990301.htm
Detailed next curricula(in Japanese):
 http://www.mext.go.jp/a_menu/shotou/new-cs/index.htm
English translation of curricula of primary schools(in Japanese):
 http://www.mext.go.jp/a_menu/shotou/new-cs/youryou/eiyaku/1261037.htm
 See the attached file.
Shops of English translations of Text books for primary Mathematics
 (in Japanese)
 http://shop.tokyo-shoseki.co.jp/shopap/feature/theme0053/
 http://www.gakuto.co.jp/20050131e/index.html

English version:
Ministry of Education
 http://www.mext.go.jp/english/a01.htm
 http://www.mext.go.jp/english/org/struct/010.htm
You can buy a book:
 Mathematics Program in Japan Elementary, Lower Secondary &
 Upper Secondary Schools, 1,000 Yen $9.00
at the Japan Society of Mathematical Education (JSME)
 http://www.sme.or.jp/e_index.html

Yasuo Morita

ICMI representative for Japan