在这个早期阶段，使用面向学习的评估方法来估算前几个迭代需要的资源也是有用的。

At this early stage, it may be useful to apply learning-oriented estimation to assess the resources required for the first few iterations.

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专家说，三岁前的孩子拥有人生中最惊人的学习能力，此阶段亦奠定他们对这个世界的认知，以及未来的学习模式。

Experts say children before the age of three with life in the most amazing ability to learn. This stage also lay their cognition of the world, and the future mode of learning.

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第二阶段：适合5 - 7岁的儿童。在巩固前一阶段学习的同时，加入一些字母组合读音的教学，让孩子对学习拼读单词有兴趣。

The second stage: suitable for children aged 5-7. Consolidating the previous knowledge, we add some letter combinations into class to develop their interest for spelling skills.

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