In order to parents really listened to your arguments about why you need a scooter that needs a good reason. For a start, imagine yourself in the place of parents. As you know, most often it is against the mother. Why? Though, because mom loves you and you is the most precious thing she has. To not constantly think about what her son or daughter gets into an accident, it must be sure that you know the SDA.
Therefore, the main condition — learn the traffic rules. Remember, what you do is not so much in order to show mom or dad that know about the rules, but first and foremost for themselves. Remember, how many road accidents with participation of scooters and motorcycles. Think about it — if you really so need a scooter?
Another option to show your worth and ability to handle a vehicle is to rent a scooter. The cost of the issue here is not any comparison with the cost of the scooter but that way you will really be able to assess their skills and demonstrate their parents to practice. Besides, you more clearly defined in their desires.
If you are assured parents that control the scooter I can, but the question still remains unresolved, show practical benefit from the purchase. Here it is necessary to improvise and to raise issues actually relevant to your family. For example, your grandmother often in the garden and it is sometimes necessary to take something or bring in from the garden cucumbers or potatoes. And here comes to the aid of a scooter. Without distracting parents, you will easily be able to do a good job to help my grandmother. The presence of the scooter is justified.
If you know that parents are not against it, but still don't rush. Wait for moments when they are in a good mood and to the question about buying from afar. Or really do anything useful, thus creating a positive background for talking about the scooter.
So, you make a conclusions.
First decide if you really so much need a scooter. Think carefully and more than once. If the decision is made — be sure to learn the rules of the SDA. Practice on computer programs, whatever — but the rules you must know. Invent a really good reason to buy. Such reasons as "Because I want" or "Yes we all now these scooters is that I left what?" will only alienate you from your dreams.