Child Development (Infancy to 10 years old) By gadiel0630 Jan 14, 2019 Birth Apr 14, 2019 4 months: Begins to babble/First Smile Jul 14, 2019 7 months (Babbles many chains of sounds) Jan 14, 2020 1 year: Forms a secure attachment to caregiver Jan 14, 2021 2 years: Begins to make-believe play/defiant behavior Jan 14, 2022 3 years: Start riding a tricycle/Sort objects by shape and color Start riding a tricycle Sort objects by shape and color Jan 14, 2023 4 years: Cooperates with other children - Can start Preschool Jan 14, 2024 5 years: Dresses and undresses without help/Kindergarten Jan 14, 2025 6 years: Can recognize others’ perspectives/Can’t assume the role of the other Jan 14, 2026 7 years: Strict adherence to rules/Behavior and Intent Jan 14, 2027 8 years: Coordination continues to improve/Privacy Jan 14, 2028 9 years: Increased attention span but interests may change rapidly. Jan 14, 2029 10 years: Rules can be negotiated/Puberty