1. Safety: Make sure that the building blocks have no sharp corners, small parts or toxic substances to prevent the baby from swallowing or being injured.
2. Material: choose non-toxic, environmentally friendly and durable materials, such as ABS plastic, and avoid building blocks containing heavy metals and harmful substances.
3. Diversity: Choosing building blocks of various colors, shapes and sizes can stimulate your baby's imagination and creativity.
4. Educational significance: Choose educational building blocks, such as letters, numbers and animal shapes. Can help your baby understand the basic shapes and colors.
5. Spelling difficulty: Choose building blocks with different difficulties according to the baby's age and ability, and gradually increase the difficulty from the simple beginning, so that the baby can grow up in the challenge.
6. Interaction: Choose building blocks that can be used with other toys, such as rail cars and hot wheels, which can enhance the baby's hands-on ability and spatial thinking ability.
7. Brand and evaluation: Choosing well-known brands and building block products with rave reviews can ensure product quality and safety.