I had the same problem with my daughter, so we started with powerpoint, after a while, she no longer pays attention (I did not see results) it was concerned by the images and not by words, today what I do is paste the words on the wall. I read again and again the words to her (as in a game) after she read to me, I'm currently doing 10 words a day for a week. next year I'll start giving them to small classes of encyclopedic knowledge.