If you want you can have just 3 sessions, but show only 5 cards, not 10. It's very easy for babies of 8 months to get the amounts. Don't imagine your sessions to be long! they're only like 5 seconds - and it's still 3 sessions, just each are broken up into 2 mini ones: you don't need to wait half an hour before you can show the next 5 cards. So like everyone says here, your first session is: 1,2,3,4,5, and about 5-10 seconds later 6,7,8,9, 10. Session 2 the same day: 4,6,3,8,1 and few seconds later 5,2,10,9,7. Session 3 the same day: again reshuffle the 10 cards and split them into two groups. Now, the "few seconds" can be: you crawl over to the other side of the room, or you drink some juice, or look at some other cards (like bits or reading cards), or whatever, it can also be 30 min if so happens.
For simplicity I wouldn't show equations before finishing the quantity cards - except if your little one really buys into the dots. Just go through the dots till 100, then start the equations. If you feel you need a bit more challenge, you can do a bit of problem solving after passing 60 or so with the cards: like "which one is 53?" to choose between 53 and 24 for example.
Hope this made sense..
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