Counting is really important for young English learners (ESL, EFL). Numbers are useful in every day life (shopping, cooking) and numbers also contain many important phonetic sounds of the English language. More below video:
It takes a bit over 23 minutes to count to 1000 by 1s in this video. That is a long time to sit through a video! However, you can use parts of this video to practice. For example, try counting from 1-100 one day, and the next 101-200.
Put it on in the background before class, and let your students listen to the numbers. These are just a few ideas. I hope you find this video useful for your classes and students! Happy Teaching!