Pages

Wednesday, June 1, 2011

Body Systems: Digestive System: Digestion in a Bag

Students model both mechanical and chemical digestion with simple materials.

Each student needs a zip-top bag, one or two crackers (saltines work well) and a small amount of soda.

The crackers are placed in the bag. 

Students smash the crackers to represent mechanical digestion - breaking apart the food. 
A small amount of soda is added to the bag.  After observing for a  few moments, students and squish the contents of the bag.  The soda contains acid, like your stomach does, which helps break down the food even further.  Once the food has been turned into a slurry, it is ready to be passed on to the intestines.

6 comments:

  1. Thanks for sharing. I will be doing this with my kids tomorrow.

    ReplyDelete
  2. I also wanted to say THANKS FOR SHARING! We used your idea last week and I posted it on our blog.
    http://warmwinterwishes.blogspot.com/2014/10/classical-conversations-cycle-3-week-6.html

    ReplyDelete
  3. Fantastic idea! Did this with my preschool class, and they loved it. I appreciate the fact that the lesson is so simple, and yet effectively teaches the concept.

    ReplyDelete
  4. "Excellent Article.
    Enzyme is dedicated to providing exceptional enzyme-focused supplements at the most therapeutic levels available in the natural foods industry and beyond.

    Using cutting-edge formulations, in 1998 Enzymedica introduced Thera-blend™ to the industry. Thera-blend is a proven technology for blending multiple strains of enzymes, shown to be far superior in potency over competing brands.

    From the beginning, we understood how everything begins with digestion. All food is composed of protein, fat, carbohydrates and fiber. The key to turning food into energy is enzymes. Once food is broken down, the body can rebuild and heal, build or create energy and remove toxins and Digestive Enzymes."

    ReplyDelete
  5. Watch out it made me want to puke when we tried it with bread

    ReplyDelete

Note: Only a member of this blog may post a comment.