One reason: children need vivid mathematics, while adults give him abstract mathematics.
The second reason: children should learn mathematics in the way of right brain, while adults teach mathematics in the way of left brain.
Reason 3: Parents and teachers mistakenly think that mathematics need not be learned too early, and children don't understand it, so primary schools have to learn it.
Reason 4: I didn't grasp the three math sensitive periods of children under 7 years old.
Cognitive mathematics
Many years of misunderstanding, people think that mathematics is logical thinking and logical mathematics, so our children's mathematics learning tools are full of abstract concepts, which leads to children's ignorance and lack of interest. They should have accumulated a large number of mathematical images in the critical period of right brain development at the age of 0-7, but they are often unable to do so because children are not interested. In primary school, they don't like math and don't understand it.
After a lot of research, exploration and practice, Qian Duo, an internationally renowned child psychologist, child educator and child brain research expert, found that mathematics is the logical result based on thinking in images. For example, children with 5+3=8 must store relevant image materials in the right brain, that is, the relationship between four quantities, two quantities and six quantities, 1 quantity and seven quantities, and zero quantity and eight quantities. With this image thinking foundation, children can sum up the rules and draw logical relationships by themselves. If children learn to play mathematics in a visual way, it will not only arouse their high interest in mathematics, but also establish good mathematical thinking ability and lay a solid foundation for their future achievements in the field of mathematics.