It's always handy to have a variety of resources available to help children consolidate their understanding of place value. I've made a few things recently that I've been using with some of the children in my class, and thought I would share them here.
If you click on the picture to the right, you will be able to download a file that has a 'Teen Number booklet' as well as 6 additional teen number worksheets.
In the link on the left below, you will find apple ten frame 'Teen Number flash cards'. In my classes, we've always enjoyed Number Talks, and at early or early first level, 'Quick Images' are one of the easiest ways to incorporate Number Talks into your daily routine. Playing 'Quick Images' with your class only takes a couple of minutes at most (I know it's hard to fit more routines into your day).
For 'Quick Images', I show the class a card with a given number of items for a few seconds, and they have to tell me how many items were on the card (after I've put the card away). My Primary 1 classes always loved the 'Teen Number' images (which also reinforced place value concepts), as they knew instantly that the first 10 frame was full, and they only had to recognise how many extra items were in the second 10 frame to identify the teen number.
There used to be lots of laughter as I drastically reduced the time I gave them to identify the number, while they still got it right every time...a small maths confidence boost for the kids in your class, which is always a good thing.
If you click on the picture to the right, you'll find a file with a variety of teen number games and activities. I created most of these for use in my ASN classroom, but they would be equally appropriate for an early years classroom. I used variations of these types of activities when I taught mainstream P1/2.