Thank goodness for Pinterest!! I have found the cutest labs and activities for our 4th graders to do!! Today’s lab modeled digestion. Each child received a sandwich bag and 2 saltine crackers. We zipped our bags closed, and mashed our crackers together to model mechanical digestion. Mechanical digestion is when we chew our food up!! Next, we poured a small amount of Sierra Mist in each bag. This represented chemical digestion which is the stomach acid helping to break down the food into simpler compounds to digest. This lab helped us to ‘see’ digestion in action!! 🙂
Mrs. Goggans' 4th Grade Scientists 