I want to find a website where someone teaches elementary school math and Chinese exercises.
In fact, there are many in Baidu library. Others, I recommend to you: Douding.com (registration required), primary school teaching resource network, primary school mathematics test center /Olympiad.com, and primary and secondary school examination network. These are free, with many topics and strong pertinence. Let the children take a unit test or have special exercises. If it helps, please agree.