Time-In is one of the best strategies we use with our kids! All those I know, who initially started using this strategy to connect with their adoptive or foster kids, have chosen to implement it with their bio kids as well. It is a great way to help your child process their feelings, calm down, connect with them, and correct their behavior.
This new ETC article helps explain it in great detail –
Here is a link to a blog post I did a few months ago on the bin we keep beside our chair.