What lens is good for children's photography?

It's not too early to learn photography at the age of eleven, but no one in the family knows photography. Who will teach him? Now the study pressure is so heavy, when can I practice photography? Buy a SLR (-! Nobody can use it. It's not that the money burned too much.

Well ~ I must learn, and my family conditions permit, so all right ~ SLR, of course. Since the $5,000 entry machine is for children to play with, it's not a problem (in fact, it's not much) that 1W is in its early days.

Several options

A: 60d fuselage +EF-S 17-55/2.8 IS USM is put into use at one time ~ no extra lens is needed, although there is no telephoto, it is enough for learning photography. The premise is to study, not to shoot "Come here for a visit". Update the whole machine and sell it later.

B: 550d fuselage +EF 24- 105/4Lisum low-end fuselage is enough, and it's time to replace it. The lens is very practical, but you need to buy wide-angle and telephoto lenses in the future. Of course, it will be disdainful to sell this lens in the future (it is also possible to preserve the value of this lens). If you really want to learn photography, this investment is much less than in the previous film era.

There are too many equipments. Considering the maintenance and other issues, novices had better not use the lens of the deputy factory.

I only use the Canon fuselage, and I'm talking about Canon. I want to use Nikon to see other people's suggestions.