Key Development Stages for Children

First Critical Period: Sensory Development

• Auditory Sensitivity: 0-4 months
• Visual Sensitivity: 0-6 months
• Gustatory Sensitivity: 4-8 months
• Olfactory Sensitivity: 6-10 months
• Tactile Sensitivity: 0-12 months

From birth, children familiarize themselves with the environment through auditory, visual, gustatory, tactile, and olfactory stimuli. Parents should encourage listening, touching, observing, and smelling to stimulate their senses and foster intellectual growth.

Second Critical Period: Motor Development

• Head Lifting Sensitivity: 2-3 months
• Manual Dexterity Sensitivity: 1-10 months
• Rolling Over Sensitivity: 3-4 months
• Sitting Up Sensitivity: Around 6 months
• Rolling Over Intensely: Around 7 months
• Crawling Sensitivity: Around 8 months
• Standing Sensitivity: Around 11 months
• Walking Sensitivity: Around 12 months

This period, also known as the child's second birth, emphasizes the rapid acquisition of walking skills and gross motor development. Parents should encourage physical exercise for proper motor coordination, promoting balanced development of the left and right brain. Hand-eye coordination training fosters good habits and enhances intellectual development.

Third Critical Period: Language Development

• Crying Sensitivity: 0-6 months
• Babbling Sensitivity: 3-6 months
• Recognition Sensitivity: 7-9 months
• Calling Out Sensitivity: 8-11 months
• Talking Sensitivity: 1-2 years
• Nursery Rhyme Sensitivity: 2-3 years
• Curse Word Sensitivity: 3-5 years
• Story Listening Sensitivity: 3-5 years

Language sensitivity emerges around 6 months, with a language explosion at 1-2 years. Hearing sensitivity persists until 3-4 years, and the application, reading, and comprehension sensitivity phase begins at 5-6 years. Parents should engage in frequent conversations, storytelling, and questioning to enhance comprehension and expression skills, laying a solid foundation for future interpersonal relationships.

Fourth Critical Period: Interest in Minute Objects

• Sensitivity to Small Objects: 1-2 years
• Sensitivity to Details: 1.5-3 years
• Water Play Sensitivity: 3-4 years
• Sand Play Sensitivity: 3-4 years

During this period, parents can play games involving picking up and grabbing objects, as well as playing with water and sand, to foster an understanding of details and lay a foundation for future meticulousness.

Fifth Critical Period: Order Formation

• Order Sensitivity: 1-3 years
• Spatial Sensitivity: 1-3 years
• Lifestyle Habits Sensitivity: 2-3 years
• Property Rights Sensitivity: 2-3 years
• Inhibition Sensitivity: Around 3 years
• Stubbornness and Rebellion Sensitivity: 3-4 years

Children's order sensitivity manifests in their demands for sequence, lifestyle habits, and possessions. This period is crucial for guiding them to understand order, spatial relationships, and develop good habits. It's also an opportune time to teach sharing. Parents can engage in block building, storytelling, and delayed gratification activities to foster empathy, love, and good character.

Sixth Critical Period: Norm Establishment

• Independence Consciousness Sensitivity: