I have updated the screener I use and I can see it may be useful to others as well. It links to all my resources, so I have included the links if you wish to go that way.
The addition grid is helpful to show students the facts they know and the ones they need to learn. In my intervention sessions I usually find they know a lot more than they don't know, so it's a confidence booster for them.
I find a lot of my intervention kids use their fingers for all addition and subtraction and this is where the problem must be addressed. If they are using their fingers and their answers are accurate I don't do anything. They have a successful strategy for those number facts. If they are using their fingers and their answers are wrong then you need to address this either by correcting the existing strategy or replacing it with a more efficient one. You may need to look at my Slam Dunk workbooks if this is the case because it will take some time to replace a habit that the student has probably been using for years.
I teach the subtraction facts along with the addition facts to address the problem some students have with subtraction (as being harder than addition). Fact Families fit in here nicely.
The games are a must for intervention kids who just need the repetition to achieve mastery. The fun of playing a game means they come to the task with eager anticipation and this is the mindset you want for learning to occur. The repetition will lead to fluency. The more they play, the faster the progress they will make, so putting the games in a Maths Centre for daily practice is ideal. I also send them home for Family Fun Time when I can.