Hi,
Im doing math program with my 4months daughter and I wonder wether it is so impotant to add new cards how Doman prescribes: retire 1 card , add 1 card and so on? I’ d like to do many programs and this way of adding new cards seems to be confusing. Isn’ t it easier just to show a set of cards during a week, for exemple, then put them aside and add a new set? Is it matter how to add new matiriels?Thanks in advance