It is certainly useful for children to learn speed reading and memory. Developed countries in Europe and America, including Japan and South Korea, have incorporated speed reading memory training courses in primary and secondary schools. At present, the research on speed reading memory training in China, such as jint, has been going on for more than ten years, and software tools for training have been developed. Pupils can generally start training from the third grade, when they already know many words. If you are satisfied, help to adopt one. Thank you.