1. Suitable for age groups: Choose teaching materials suitable for junior two students to ensure that the content and difficulty are suitable for children's cognitive level.
2. Textbook version: Understand the textbook version used in your school or region, and choose the matching teaching AIDS.
3. Teaching content: Choose teaching AIDS covering the main knowledge points and concepts of grade two mathematics, such as addition, subtraction, multiplication and division, cognitive graphics, weights and measures, etc.
4. Practicality: Choose teaching AIDS with practical and applied problems to help children consolidate what they have learned and improve their problem-solving ability.
5. Teaching methods: Choose teaching AIDS that focus on heuristic teaching and focus on cultivating children's interest and thinking ability.
6. Parents' evaluation: refer to the evaluation of teaching AIDS by other parents and students to understand their advantages and disadvantages, so as to make a more informed choice.
7. Price: Choose teaching AIDS with appropriate prices according to the family's economic situation, and don't blindly pursue high prices.
8. Publishing House: Choose teaching AIDS produced by well-known and experienced publishing houses to ensure the quality and authority.
Finally, parents can comprehensively consider the above factors according to their children's actual situation, and choose suitable second-grade math teaching AIDS for their children.