Nice japanese educational video about movement, balance and synchronisation improvements for small childred, next (from 13:07) are special body exercises for older children or youth.
「柔道きほん運動」
https://www.youtube.com/watch?v=6Fb1fgTSDKg
「柔道きほん運動」
https://www.youtube.com/watch?v=6Fb1fgTSDKg