Hua Hua here, from GenieOne. We build tingxie tools, so you know where this comes from. No pitch and no link in this post.
The Friday paper comes home with four characters circled in red. The usual response is more copying. Sometimes that is right. Often the paper is telling you something else, and you can see it in about two minutes.
Sort the wrong characters into three piles.
Pile one: homophones
Tingxie is read aloud, so your child is choosing between characters that sound exactly the same. 在 and 再. 做 and 作. 象 and 像. 那 and 哪. 以 and 已. 他, 她 and 它. They can know every one of those characters cold and still pick wrong, because the sound carries no information about which is meant. Copying it 20 more times changes nothing. Learn the character inside its 词语 instead. The phrase is what decides it.
Pile two: look-alike components
氵 against 冫. 礻 against 衤. 木 against 禾. 土 against 士. 己, 已 and 巳. 未 and 末. 干 and 千. This one is visual, not aural. It responds to putting the confusable pair side by side on the same page, which most practice never does. A child who has only met 礻 on its own has never had a reason to notice what makes it 礻.
Pile three: speed slips
A stroke goes missing from 器 or 赢 or 藏. The character is known. The hand was chasing the teacher’s pace, and the teacher does not slow down for anyone. Grid paper helps more than another round of copying, because 米字格 gives the components somewhere to sit. Lined paper gives them nothing.
Each pile wants a different fix, and only the third one is fixed by writing it out again. That is why a child can sit there for an hour and lose the same four marks the following week.
Take one marked paper this weekend and sort it. Most of the time it turns out to be four specific characters rather than a Chinese problem.