Interesting math is very helpful to open a child's brain. First of all, interesting mathematics can stimulate children's interest and curiosity in learning. Through interesting math games, puzzles and challenges, children can learn math knowledge in play, thus cultivating their interest and love for math.

Secondly, interesting mathematics can improve children's thinking ability and logical thinking ability. In the process of solving interesting mathematical problems, children need to use various thinking skills, such as reasoning, induction, deduction and so on. The cultivation of these thinking abilities is very important for children's intellectual development.

In addition, interesting mathematics can also cultivate children's creativity and problem-solving ability. Interesting math problems often require children to use their brains to find different solutions, which can exercise their creativity and problem-solving ability and cultivate their habit of independent thinking and innovative thinking.

Finally, fun math can also improve children's concentration and patience. Solving interesting math problems requires children to concentrate and think patiently, which can help them develop good study habits and perseverance.

To sum up, interesting mathematics is very helpful to open children's brains. It can stimulate children's interest and curiosity in learning, improve their thinking ability and logical thinking ability, cultivate their creativity and problem-solving ability, and improve their attention and patience. Therefore, parents and educators should attach importance to the educational value of interesting mathematics and provide more interesting and beneficial mathematics learning opportunities for children.