We have an issues with Isabella taking a lot of time eating. So recently we installed an analog clock into our dinning room. Before we start I tell her that is the long hang gets to this number she needs to stop eating and if she doesn't finish in that time frame no more food for the rest of the night. We give her more than enough time, and it is visual rather than numbers. The results are amazing! Almost every night she has finished her food. Along with that she is learning length of time concepts and the ground work is being laid down for reading a clock.