我不鼓励背任何东西.
I don't want to have my child to have a habit everything taken for granted,
she need get a habit of thinking, not memorizing. e. g 乘法表, I encourage
my child to calculate whole time by herself. It is a basically addition.
Whenever she does math, she have 乘法表 at her hand. So she is 10 now, she
still look for her 乘法表. The best news is Math test is no time limitation,
and I am homeschool, no pressure on time, the worst is her calculation is
very slow.