I made this game for Hunter recently to help him with memorization of basic arithmetic facts. The one shown in this picture is the plus one board.
The answers are on the board and there are little cards that have the equations on them. The goal is to match the equation to the answer as quickly as possible, trying to beat your previous best score. I think he likes the self competition, it's been going well with him. The first day it took him about eight minutes just to find all the answers, but on even just the second time, he found them in less than four! That has been about the rate he still does it, I'm sure he could do it a little faster but he tends to talk a little too much while doing them.
This is the first time we've ever done anything like this - that is, working on repetition of simple arithmetic. He seems to be doing well with it though, and after only a couple days he is done with the plus one board and is moving on to plus twos, then all the way through multiplication facts, etc. I'm hoping this will help him with speed, we shall see!
"And Isaac said unto his son, How is it that thou hast found it so quickly, my son? And he said, Because the LORD thy God brought it to me."
Hunter is 4 years, 9 months old