From the moment children are born, their brains are like little sponges, soaking up all the information around them. The environment we create for them shapes and influences their brain development as they embody the same beliefs, habits, coping mechanisms, communication styles and emotional regulation as we do.
A child who grows up in a family that values honesty and integrity will develop these traits and see them as important in their lives. Similarly, a child exposed to violence or aggression may develop a belief system that considers these behaviours acceptable or normal.
Children will grow up unaware of this happening because it's subconscious. Their brain will grow neural pathways as they learn new things and experience new sensations; this is neuroplasticity.
When a child learns a new skill, such as bike riding, the brain forms new neural pathways that help them coordinate their movements. As they continue to practice, these neural pathways strengthen, and riding a bike becomes second nature.