Read the story series, 1-6 * * 162, including 1, 2 books with 36 books, 3 books with 24 books, 4 books with 24 books, 5 books with 24 books and 6 books with 18 books. Steps 7-9 add up to 40 books.

1-6 grade is more suitable for children aged 4- 10. After level 7, you can start with the chapter book, which is a little more advanced. Each version has its own difficulty classification and growth system, and the content and plot are completely different and there is no overlap.

So if the budget is sufficient, I suggest buying both versions. The two versions cooperate with each other and complement each other, so that children can experience authentic English more completely and the learning effect will be better.

Oxford reading tree series reading books:

The children's graded books published by Oxford University Press are very famous in Britain, and they are one of the most used books in primary schools. Almost every school has it in its small library.

There will be a whole set of Oxford reading tree books for children to borrow. The reading level of series * * * is divided into 16 stages, and the series from 1 to 1 1 is called reading tree. When children's reading level reaches 1 1, they should be able to read confidently and smoothly.