Children in grade one have poor mathematical understanding. Children should take part in interesting math activities, such as toy building blocks, puzzles and counting games, and encourage them to try different methods to solve problems.

To improve the mathematics understanding ability of grade one children, the following measures can be taken:

First, pay attention to the basics: when teaching mathematical concepts and skills, ensure that students master the necessary basic knowledge.

Second, practicality: link mathematics with practical application, so that students can realize the importance of mathematics in daily life.

Third, interactive teaching: through interactive teaching methods, such as games, group cooperation, etc., increase students' interest and participation in mathematics.

Fourth, diversified teaching: use a variety of teaching methods and resources, including books, videos, charts and so on, to meet the learning needs of different students.

5. Incentives and rewards: Encourage students to actively participate in mathematics activities and give them appropriate rewards and recognition.

Mathematics is one of the most important tools in natural science and social science. A good understanding of mathematics helps people to better understand and solve various practical problems. Many industries need high-level mathematical skills, such as science, engineering, finance, computer science and so on. A good understanding of mathematics can help you get better career opportunities and higher salary levels in these fields. In short, a good understanding of mathematics is of great benefit to individuals and society, and can help us better understand and improve the world.