Open to Grade K-Grade 10.

You kids have already learned most fundamental chess knowledge, like tactics, opening principles and basic endings, and are able to apply in their own games. More notably, they have primarily established their habit of "thinking ahead" ( or say "chess vision").  
In this Step we continue teaching some essential skills, like "preparatory moves".
Topics include: Opening advantage, Interfering, Luring, Blocking, Thinking ahead, The pin( luring), The passed pawn, Eliminating the defence and more. Others will be covered in Step 4B/4C.