In fact, the rule is in the older leagues (11 yo and up) that you must slide in order to avoid a collision. If a kid doesn't slide into a base and a play is at

In fact, the rule is in the older leagues (11 yo and up) that you must slide in order to avoid a collision. If a kid doesn't slide into a base and a play is attempted there, he or she is out by rule. The no-slide issue is really a developmental issue. At very young ages, (levels, really), there is no sliding. But as the kids advance, they are able to slide (by 11 or 12 years old). The point is, they have to be taught (1) how to slide safely, and (2) how to cover a bag safely in a slide.