I have fully embraced the power of ten frames in my room. Van de Walle is right. He says young mathematicians recognize 10 in a ten frame much more easily than 10 cubes linked together to make a long train or the 10 in a base ten rod. When they see that train, they still want to count each and every one of its cubes. When they see a full ten frame, they're convinced it's 10. No counting needed. I've also enjoyed using ten frames to teach teens. We recently made this chart together.
By the way, the full ten frames are blue. The extra ten frames are green for distinction purposes. When the ten frames were completed and glued, I asked, "What do you notice?" They noticed all kinds of things, and eventually their comments led us to the point of adding all the numbers to the chart as well.
I found the inspiration for the chart below on Pinterest. Unfortunately, the link didn't lead me to its owner, but it's a great tool regardless. I simply chose to modify it by using the ten frame model, since it's one that we're embracing completely and understand well.