At what age did Mathias learn the colors yellow, red, and blue through play?

Learning colors is a significant developmental milestone in a child's early years, often emerging around 18 months. At this age, children engage in various forms of play that promote exploration and sensory experiences, allowing them to discover colors through interaction with their surroundings.

By 18 months, children typically exhibit heightened curiosity and improved cognitive abilities, which help them categorize objects and recognize colors, especially primary ones like yellow, red, and blue. Play facilitates this learning process as children often encounter colorful toys, books, and materials that can be identified by color. Engaging in play also allows for social interaction, which further reinforces their understanding of colors through conversations and guided activities with adults and peers.

Although some children may begin to recognize colors slightly earlier or later, 18 months is commonly viewed as the appropriate timeframe for when this learning occurs through play, making this the most suitable answer.