I don’t use Big Flash Cards all the time. I limit it to about a month or 6 weeks in the spring. Since flash cards are so boring, I turn it into a contest and that makes it more fun. Although each student buys a set a flash cards, sometimes they lose them during the year. So I made a set in Finale and now they have no excuse. While it is important that students learn to play by intervals and not think of each note as they play, students should learn the names of the notes to give them confidence. When we do flash cards in my studio, the student has to say and play the note. I don’t think it does a whole lot of good in piano to know the name of the note, but not which key it is on the keyboard.