Collaborative groups and cooperative learning refer to a variety of structured classroom management techniques and grading systems developed and studied by Aronson, Johnson & Johnson, Kagan, Slavin, and others since the early 1970s.
But within the realm of your food choices, including red beets and their green tops, Yukon gold and sweet potatoes, avocados, oats, and cod liver oil in your diet are simple and concrete steps that you can take right away to improve the health of your digestive system.
1 Onions can improve the digestive system. If you have a digestion problem, then onions can cure it by increasing the release of the digestion juices.  Onion juice can cure burnt skin or an insect bite or a bee bite. It may burn more but it can heal it very effectively.