Bobby Shaftoe is a great song for practice with ta's and ti's. There is also a great game/line dance that goes along with it that my kids love.
-Words for singing
-Steady beat icons
-Words for "clapping the way the words go"
-Iconic notation of ta's and ti's
-Stick notation of ta's and iconic notation of ti's (if ti's have not been presented yet)
-Stick notation of ta's and ti's