Kady surprised me with his 'sorting' concept. Treading blocks and puzzle pieces were mixed up on his table. I just merely asked him to pack up for lunch, he packed accordingly in his two-compartment container! That's sorting concept too!
Do you realize when our child has all his/ her toys and books everywhere, and when he/ she is packing up by putting up the toys and books at the right place, he/ she is practicing sorting concept!