Using pens as "time out"
I know that it's not a good idea to put a dog in his crate as punishment but what about a play pen? Our little girl is usually very mellow for a pup her age but occasionally she gets over excited. She still wants to mouth my two kids (which they handle very well). But they are not at all tolerant of the puppy jumping on them. At 16 weeks she's strong enough to push them over when she jumps. The kids get SO upset, especially because she pulls on their clothes after they're knocked over. Even though its all in play its hard for them to understand. They're never left unsupervised together, but Im not always in arms reach when they're in the same room.
So is it ok to confine her to the pen as punishment? Or is it better for her to learn from their natural reaction of being hurt/upset because she pushed them over?
Maybe my pup just has too much house freedom?