By the way - if the little learner gets the whole thing wrong - I would suggest simply repeating the correct word/action yourself in very bright positive tone and move on to the next card. Then I would make sure of doing that one again in the near future to reinforce it.
I heard that when children learn to read when they get to primary school - they will need at least 16 repetitions at intervals for every word/letter they see in order to internalise it - this applies whether its a whole word or phonics method. Then reinforcement later increasing the interval with revisions every week.
Remember that is for kids of 5yrs up - think how much quicker our kids are drinking it all in - they are like sponges just soaking it up.
The way we do it - they learn in a small family group - even one to one - that is more valuable than one teacher trying to turn 24 or more kids into enthusiastic readers who love books.
Also I think the same is bound to apply when we have the benefit of "Little Math" and "Little Musician"
By the time they go to school I'm sure they will have time for so many more interesting things to learn.