Since your question is about the concept of reciting, I guess children should be young, maybe primary school, at most junior high school.

Both English and Chinese belong to liberal arts thinking, and the concepts are relatively intuitive. As long as you understand the literal meaning, you can understand the meaning of the concept 、

But mathematics is different, emphasizing logical thinking, even if the most basic is Pythagorean theorem, a? +b？ =c？ Even if you recite it, the child doesn't understand what abc means and won't use it in the exam.

Pythagorean Theorem The sum of squares of two right-angled sides of a right-angled triangle is equal to the square of the hypotenuse, so we should start with the basic concept, the meaning of a triangle-right-angled triangle-right-angled side, hypotenuse and square, and then demonstrate its proof method, so that children can thoroughly understand the formula and its meaning.

On the other hand, if children really understand the meaning and derivation process of mathematical formulas and concepts, they don't need to recite them at all, and they can even be directly derived during the exam, such as geometric series and arithmetic progression's N-term sum formula.