We use the 100s chart (I got that free with the Highlights response sheets a few years ago) and practice counting by tens up and down the hundreds chart for whatever number day we are on. We also do the place value with the magnetic place value chart (pan) - talk about the tens rods and ones cubes. I also have a tally mark section under the green word cards.
Then we get to the How Many Days board. I love this part. Especially now that we have different pictures on there. I change the pictures monthly. So sometimes the pictures change on the same ten frame. This is great for discussions!! Another thing we've been doing is practicing different ways to make ten. We've been playing a Ten Frame Game.