Try stepping back when your kids complain about feeling bored. This will empower them to think for themselves and learn to be resilient. It will also encourage them to find their own way out of the boredom, and the problem-solving process helps them feel good about themselves.
Learning to ride a bike is quite a milestone in a childs life. When you start to teach them is up to you, with some kids starting to learn as early as 3 years old. Generally though its usually around their 4th or 5th birthday or sometimes even later. Follow these easy steps to help them on their way.