This is an excellent activity to discuss foods that are good for you/your teeth and foods that are bad for you/your teeth.
It can be differentiated by having the teeth and/or the foods cut out ahead of time, or having the students do all of the cutting.
For younger students, I like to give one food at a time and discuss it as a group.
For more advanced students I like to give all of the foods and have him/her pick and choose then check the work.
This can also be done as partner/group work.