A "finished" box could help make transitions smoother

A “finished” box is a box where your child can place items that they are finished with when it is time to transition, or things that represent those items. This box can be located anywhere that you perceive to be suitable and it can be labeled with a word or a visual cue to indicate its purpose. The drive behind introducing a “finished” box is to create clear and predictable transition routine, all while decreasing transition time and heightening positive behavior.

For example, you could put literal things in the box, like a homework assignment, or you could write out "Homework assignment" on a piece of paper and have your child put the paper into the box, to signify that it is finished.