The only actual "learning" time that we do where we sit and focus on something is 1) if we are doing some kind of science experiment (what happens if we mix 2 different colours, we made a composter, we tested what things float and what sink, etc) where the kids are actively discovering the concept that I am teaching or 2) during circle time I will have them find me the colour and shape that we have been working on. Once the kids are about to start kindergarten, we play some computer games for letter recognition and practice writing letters when they are painting or colouring. People of any age learn best when they are actively engaged (not just listening) and when they are enjoying what they are doing.