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.
Foods rich in digestive enzymes are: Papain in papayas, which helps break down proteins. Bromelain in pineapples also helps break down proteins, as well as having anti-inflammatory properties. Sprouts (the seeds of different types of grain) are a concentrated source of enzymes when germinated (soaked in water).