Here is the Tokkatsu Teaching Material “Cross Age Group Activities (Tatewari Katsudo) by Maki YAMADA, Professor of Sugiyama Jyogakuen University, Nagoya, Japan. How to do Cross Age Group Activities by Maki Yamada
Japanese version 特活マニュアル1 たてわり活動
WORLD ASSOCIATION OF LESSON STUDIES (WALS) INTERNATIONAL CONFERENCE 2020