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Digestion Experiment – Human Digestive System for Kids

Learn about the human digestive system for kids¬†that moves food from their mouth, through their esophagus, stomach, small intestine, large intestine, and out the other end as poop. This¬†digestion experiment is a ZANY and memorable¬†human body project that is super simple, but effective in teaching first grade, 2nd grade, 3rd grade, 4th grade, 5th garde, 6th grade, 7th grad, and 8th graders about how food is digested in the body and waste is expelled as poo. Plus don’t miss the free printable¬†digestive system worksheets pdf file at the bottom of the post.

Learn about the human digestive system for kids that moves food from their mouth, through their esophagus, stomach, small intestine, large intestine, and out the other end as poop. This digestion experiment is a ZANY and memorable human body project that is super simple, but effective in teaching first grade, 2nd grade, 3rd grade, 4th grade, 5th garde, 6th grade, 7th grad, and 8th graders about how food is digested in the body and waste is expelled as poo. Plus don't miss the free printable digestive system worksheets pdf file at the bottom of the post.

Human Digestive System for Kids

As children begin to learn about their amazing bodies they have lots of questions. One that I hear a lot is what happens to food so that it comes out so disgusting as poop! It’s a good questions. In this¬†human digestive system for kids¬†project we will learn what happens to the food you’ve eaten, where it travels, how it’s used, and how and why it comes out as a smelly bowel movement! This¬†digestion experiment¬†is certainly hands-on and simple to replicate! You can use this¬†digestive system experiment with kids of all ages from grade 1, grade 2, grade 3, grade 4, grade 5, grade 6, and jr highers in grade 7 and grade 8. The fantastic visual of¬†the digestive system for kids helps kids really comprehend what happens. Whether you are a parent, teacher, or homeschoolers you will love this¬†human body project that so¬†colorfully¬†explains the digestion process for kids.

digestive process order and explanation digestive system organ name

Digestive system worksheets

Start by scrolling to the bottom of the post, under the terms of use, and click on the text link that says >> _____ <<. The  human body printables pdf file will open in a new window for you to save the freebie and print the template pages.

digestive system for kids-page-006 digestive system for kids-page-009

All 4 worksheets include an answer key! These are a great way to make sure kids learn key vocabulary and terms as well as the name of the organs involved in digestino and their function.

1 banana 6-8 crackers 1-2 Tablespoon lemon juice or clear vinegar ziplock plastic bag old pair of tights or stockings plastic funnel 2 paper or styrofoam cups gloves scissors tray or container to contain the mess sharpie (optinoal to write the different parts

Digestion Experiment

To try this digestion science experiment all you need are a few simple items you probably already have on hand:

  • 1 banana
  • 6-8 crackers
  • 1-2 Tablespoon lemon juice or clear vinegar
  • ziplock plastic bag
  • old pair of tights or stockings
  • plastic funnel
  • 2 paper or styrofoam cups
  • gloves
  • scissors
  • tray or container to contain the mess
  • sharpie (optinoal to write the different parts

stomach experiment for kids

Digestive System Experiment

Start off by showing your students the banana and cracker. Ask them what happens when we eat our food. The simple answer is the food goes in our mouth, then reaches the stomach, through the intestines, and out the other end as poop.

But why does it look so different when it comes out? It comes out a different color, texture, and ….. well it smells. Basically, all the healthy ingredients have been absorbed by your body as the food was broken down and all that is left is the leftover, unused waste. In this fascinating and¬†memorable human body science project children will learn and visualize what happens to the food they eat.

Digestion Process for Kids

The Digestive System for Kids

The six major activities of the digestive system are:

  1. ingestion – You eat food and your saliva begins breaking down the chemicals in your food; your teeth further grind the materials as you tongue moves it around.
  2. propulsion – Swallow¬† the food, now called bolus, down your throat into a stretchy, 10″ pipe called your esophogus.
  3. mechanical breakdown –¬†food getting broken down by chewing and tongue movements
  4. chemical digestion – The esophogus muscles slowly empties food into the stomach in waves . In the stomach food is stored as it is broken down by the help of muscles and gastric juices (stomach acid) into a liquidy mixture that will slowly empty into the small intestine.
  5. absorption – The small intestine breaks down the food mixture even more so the body can absorb all the vitamins, minerals, proteins, carbohydrates, and fats. Those organs send different juices to the first part of the small intestine. These juices help to digest food and allow the body to absorb nutrients. The pancreas makes juices that help the body digest fats and protein. A juice from the liver called bile helps to absorb fats into the bloodstream. And the gallbladder serves as a warehouse for bile, storing it until the body needs it. Food can take up to 4 hours in yoru 22 foot small intestine!
  6. elimination – Anything that wasn’t absorbed along the way to get used by the body will empty into the large intestine. LIke the small inestine, the large intestine is coiled up inside of you like a garden hose. The large instesting is a larger hose, about 3-4″ and if unwound would be almost 5 feet! In the large intestine food goes through the¬†colon where it has one last chance to be absorbed by the body before being pushed into the rectum and out the body as poop.

Here’s another explanation of the process of digestion for kids.

Digestive System for Kids

Digestive system process for kids

Gather all your supplies and put on your gloves. Pour 1-2 tablespoon of vinegar or lemon juice in your ziplock bag. Now it’s time to demonstrate the digestive process.

For our digetsive system model we are going to jump right to step 4 when the food is in the stomach. For the digestion experiment, students will put the food (banana and crackers) directly into the ziplock stomach. Seal it and have kids squish it, along with the stomach acid lemon juice or vinegar around.

Digestive System Experiment

Digestive System for Kids

Now the food goes into the intestines. Cut off the corner of the ziplock bag and send the mush through a pair of stockings with the foot cut off. Have the stockings hang over a bin to catch the mess liquid being re-absorbed into the body as nutrients. While the intestine is lined with sheets of muscle that contract and release to move the material down, in our project the kids will have to serve as the muscle. They will squeeze the food down the instestines.

digestive system process for kids

As the food is squeezed own the tights the excess liquid along with the nutrients will leave the intestine where it will be used by the body.

human body project for kids

Digestion Process for Kids

When the¬†food gets to the bottom of the stocking put a styrofoam or paper cup with a 3-4″ small hole cut out the bottom. The cup represents the large intestine– the last stop in the digestive process. Remember that the large intestine is about 3-4″ wide.

The Digestive System for Kids

Human Body Project for Kids

Remember how the large intestine includes the colon which tries to get the last bit of liquid nutrients out? Put a cup on top of the large inststine cup and push down to do two things:

  • extra liquid will come out (in your body it would be absorbed)
  • the waste will go out the bottom hole in the form and shape of poop

Learn about the human digestive system for kids that moves food from their mouth, through their esophagus, stomach, small intestine, large intestine, and out the other end as poop. This digestion experiment is a ZANY and memorable human body project that is super simple, but effective in teaching first grade, 2nd grade, 3rd grade, 4th grade, 5th garde, 6th grade, 7th grad, and 8th graders about how food is digested in the body and waste is expelled as poo. Plus don't miss the free printable digestive system worksheets pdf file at the bottom of the post.

This is such a fun, hands-on human body project to help kids really understand what happens when we eat food. They will not only see the digestive system model, but will be able to do it and thus remember it better.

This fun hands-on human body for kids project is such a fun way to learn about our amazing bodies! These Human Body Playdough Mats are a fun way for kids of all ages to learn about what is inside our body. Learn about human body parts for kids by completing the free printable playdouh mats. Children will learn about body systems for kids as they make bones, skeletal system, muscles, organs, and more! Use these playdough mats as part of a study of anatomy making human body model for kids from toddler, preschool, pre-k, kindergarten, first grade, 2nd grade, and 3rd grade students. Simply print the playdoh mats and learn about my body parts for kids with a hands-on science activity. ear-science-project skeletal system worksheet Kids will have fun learning about the skeletal system for kids with these fun, hands-on skeletal system project ideas for preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th graders. From Lego brick skeletal system activities and candy skeletal system, to Playdough skeletal system and skeletal system printables - we have lots of creative skeletal system project ideas.

Human Body for Kids

We continued exploring the five senses with these grade school and human body preschool activities:
  • Grab this free printable 5 senses preschool printables to explore the senses of sight, taste, sound, smell, and touch
  • Human Body human body playdough mats – lots of choices to learn about various systems of the body including simple for preschoolers, skeletal system, organs, muscles, nerves, and more!
  • Teach kids about human cells for kids with hands on activities, free printable reader, human cell worksheets, and more!
  • Human Body Printables makes a printable book that teaches students all about their heart, brain, muscles, cells, skin, bones, lungs, stomach, intestines, and bladder
  • 4 EPIC Skeletal System Project ideas for kids – using things like pasta, life saver gummies, lego, and more you can learn about the human body in a fun memorable way
  • Free Skeletal System Worksheets for Kids – everything you need to teach kids about their bodies!
  • Kids will love learning about the ear with this model of ear for school project

Learn about the Parts of the Brain for Kids with this fun brain activity for kids and handy brain worksheets! Children will learn about the functions of the brain for kids as part of our human body lesson. Use this brain project with elementary age students in first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th garde students. Simply print pdf file with brain diagram for kids and you are ready to play and learn with hands-on human body activities for kids! This fun, hands-on lungs for kids lesson will help you make a working lungs model for kids using a plastic bottle and balloon. This human body for kids project is great for kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, 6th garde, and 7th grade students. We will show you how to make a lung model that will help children understand how this important organ works with a human body activity for kids! If you are learning about the human body for kids you have probably explores the bones, muscles, and important organs like the heart, brain, and lungs. Now it's time to explore blood for kids! This hands-on activity and EASY blood model is a great visual of what makes up blood while being a silly blood activity for kids at the same time! Your preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grad, 4th grade, 5th grade, and 6th graders will love this human body activity for kids! paper bag lungs for kids

Human Body Projects

Learn about the human heart for kids with this fun lesson on the human body for kids! Kids will learn information, discover how to make a heart model out of playodugh and a working heart science project plus review what you've learned with our free printable heart labeling worksheets. These human body activities for kids are fun for elementary age kids in first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, 6th grade, and 7th graders too. Simply print pdf file with label the heart worksheet and you are raedy to learn about the heart for kids! Have you ever stopped to marvel at your hands?  Your hands can pick up small objects, write with a pencil, paint beautiful pictures, and open a stubborn jar of pickles. Help children discover how do hands work with this fun, hands-on human body project. In this human body for kids activity children will make a working hand model for them to discover how do muscles work Try this human body muscles for kids lesson with preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, and 4th graders too. this outrageously FUN human body preschool project using free printables allows kids to learn about what is inside my body We've been learning about the human body for kids in anatomy this year. We started by making our human body project where kids could see the bones inside of them. Bones make sense because they can feel the hard  object when they press on their bodies. Next we added the organs which also made sense to them as they know food goes somewhere - the stomach. Next up is teaching them about muscles. While they can make a muscle, this concept is a little more abstract. So we did this fun muscular system for kids activity to help students learn how do muscles work. Try this quick human body project with preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, and 4th graders too.

Human Body Experiments

FREE Digestive system worksheets to help elementary age and jr high students learn about the process of the digestives system, human body organs involved in digestion such as the stomach, large intestine, small intestne, liver, gall blader, pancrease, labe human body, and more!

Digestion Worksheets

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About the author

Beth Gorden

Beth Gorden is the creative multi-tasking creator of 123 Homeschool 4 Me. As a busy homeschooling mother of six, she strives to create hands-on learning activities and worksheets that kids will love to make learning FUN! She has created over 1 million pages of printables to help teach kids ABCs, science, English grammar, history, math, and so much more! Beth is also the creator of 2 additional sites with even more educational activities and FREE printables - www.kindergartenworksheetsandgames.com and www.preschoolplayandlearn.com

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