Thanks Grinity. I use spaced retrieval therapy with my dementia patients on a regular basis. Why it didn't occur to me to apply the same theory to my son's math fact memorization, I do not know! ; ) The only thing is, he nearly has a panic attack when you pull out a flash card! I paid for the math program Timez Attack, and he freaked out about the first few times we tried. I called and they told me how to remove the timer, but you can't go to the next level unless each level is completed with a timer. With spaced retrieval, it's not about speed or response time. It's about gradually spacing the time between presentation in order to promote storage from immediate memory to short term memory to long-term memory. I'm going to try this for sure! Thanks for sharing. Hope you are well!
I will definitely check out the websites.