The Historical Museum of Hokkaido holds various workshops for children on a semi-monthly basis, and the one for August (which is TODAY) is apparently on using games to learn the Ainu language.
The workshops are for elementary school-aged children and space is limited to the first 30 children (plus their guardians) to make reservations. Since this is short notice, I am not sure about the availability (reservations were open from July 21), but it may be interesting for families with young children to check out.
Hokkaido Historical Museum
Saturday Kids Workshop
"Let's Learn Ainu Language through Games!"
Date: August 20, 2011 (Sat)
Time: 10:00 - 12:00
Instructor: Masato Tamura
Reservations: Begin July 21 (Thu)
*Please call (011) 898-0500 (9:30-17:00) for reservations
Hokkaido Historical Museum Hall
53-2 Konopporo, Atsubetsucho, Atsubetsuku, Sapporo
Website (in Japanese only):