Skiing may be risky for children aged two years and nine months because their physical coordination and balance are still developing at this age. It is generally recommended that children start skiing around the age of four or five, as their bodies are more mature at this time and are better able to master skiing techniques. Of course, it is also possible to try simple skiing activities at child-friendly ski resorts under adult supervision and guidance. However, safety always comes first and it is best to do it under the guidance of a professional instructor.