Xiao Yu: I'm Xiao Yu, and I am in grade 3. Dad is always very busy and he doesn't have time to teach me. Dad, how to pronounce this word?
Dad: This? Uh, i cant remember! I forgot a lot of knowledge from long ago. I can't teach and I'm afraid to teach the wrong things.
Xiao Yu: Dad bought me a step by step point reading machine later on. Chinese, Math and English, i will point at whichever part that I don't know about.
Dad: With step by step point reading machine, my kid can be taught at home and is more interested in study.
Xiao yu: Dad doesn't need to worry about my study anymore.
Dad: Can you read this?
Xiaoyu: So easy!