1. Teaching with concrete objects: Three-year-old children are more interested in concrete objects. They can teach mathematical concepts through toys, fruits, animals and other daily objects, such as stacking wood to teach them shapes and sizes, and counting apples to teach them numbers.

2. Create a game environment: through some simple math games, such as digital puzzles, memory games, rule games, etc., children's mathematical thinking can be inspired. These games let children learn math while playing.

3. Use daily life scenes: In daily life, you can find many opportunities to teach mathematics. For example, when shopping, children can be asked to help calculate the price; When cooking, you can ask your child to help distribute the ingredients.

4. Encourage children to ask questions: Encourage children to ask their own questions and then find answers together. This can cultivate children's curiosity and exploration spirit, and also help to understand and master mathematics knowledge.

5. Regular review: Regular review is an important means to consolidate memory and can also help children better understand mathematics knowledge.

6. Patience guidance: For a three-year-old child, mathematics may be a difficult thing to understand. Therefore, parents and teachers need to be patient enough to guide children to understand mathematical concepts in easy-to-understand languages and ways.

7. Create a good learning atmosphere: both family and school should provide children with a relaxed and happy learning environment, so that children can learn mathematics in happiness.