You may need to strive for something more relaxed. I see that you mentioned in another post that Tiff is 6. It just takes a few minutes a day. Then around 3-4th grade add Winston Grammar which only takes about 15 minutes a day. Until then do a lot of games both boards, cards and dice.
Kids learn more math from that than they do anything else at that age.
If you can get your hands on Ruth Beechick's 3 little books on Reading, Math, and Language you will find a world of relief. Here is a list of catalogs to order. Many are great just to get ideas and refreshment. I cut and pasted and forgot to edit better.