Hi,
I haven�t taught young learners quite that young recently but my suggestions are:
- flashcards. Keep them very simple; colours, numbers up to 10 and words for things they can find in the classroom like "ball" and "chair". You can play lots of simple games with flashcards, to do with matching words and pictures. Games generally will help you a lot. Even just having them throw a ball back as they repeat the word you�ve modeled for them, makes it more interesting.
- songs. Some of this comes down to personal preference (and where you�re teaching) but I�d suggest you check out Super Simple Songs, ChuChu TV, the Singing Walrus and Dream English. You can also try reading very simple story books. A lot of the Dr Seuss ones are suitable and also the Very Hungry Caterpillar.
- tracing letters. You should be able to find plenty of worksheets for this online. To make it more interesting, you can get them in pairs. One child has to trace a letter on their partner�s back and they have to guess the letter.
Use lots of routine. Once they know a few songs, you can keep using them over and over, and they will love it. Especially good at the start of the lesson, to get them up and moving, and hopefully ready to learn English.
Good luck!