The Journey of Food Through Your Body
The human digestive system is the group of organs that breaks down the food you eat into tiny nutrients your body can absorb and use for energy, growth and repair. A single bite of food travels through a connected pathway — the mouth, oesophagus, stomach, small intestine and large intestine — with each part doing one important job along the way.
Digestion begins in the mouth, where teeth chop the food and saliva softens it so it is easy to swallow. The chewed food then slides down the oesophagus, whose muscular walls squeeze in waves to push it into the stomach. There it is churned with digestive juices into a thick soup. Most nutrients are soaked up in the long, coiled small intestine, while the large intestine absorbs leftover water before the remaining waste leaves the body.
Understanding this journey helps children grasp why chewing properly, drinking enough water and eating a balanced diet keep the body working well — and it is a core part of the Singapore primary Science syllabus on systems in living things.
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A big adventure🍎🚀 The Amazing Food Journey Every time you eat an apple, a sandwich or a bowl of rice, the food sets off on an amazing journey through your body! It travels through a long, twisty tube — from your mouth all the way to the end. Your body grabs the good bits to help you run, think and grow. Tap Next to follow one bite of apple, step by step. Ready? 🍏
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Step 1: The Mouth👄 It Starts in Your Mouth Your teeth chop and grind the food into tiny pieces. Your spit (saliva) makes it soft and slippery so it's easy to swallow. Tap the apple to chew it! Chews: 0 / 6 Chewing well makes the whole journey easier. 🦷
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Step 2: Swallow & Slide⬇️ Down the Food Pipe When you swallow, the chewed food goes into a stretchy tube called the oesophagus. Its walls squeeze in waves to push the food downward — even if you stand on your head! Squeeze! 💪 Squeezes: 0
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Step 3: The Stomach🫃 The Mixing Bag Next stop: the stomach, a stretchy bag like a balloon. It churns the food and mixes in special juices that mash everything into a thick soup. Churn the food! 🌀 Mix it well: 0% When it's a smooth soup, it moves on. 🥣
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Step 4: Small Intestine🌈 Grabbing the Goodness The food soup slides into the small intestine — a very long, coiled-up tube. This is where your body soaks up the healthy bits (nutrients) and sends them into your blood. Tap each card to discover a nutrient your body grabs here: 🍞 CarbohydratesGives you energy to run and play! 🥚 ProteinHelps your muscles grow strong! 🥦 VitaminsKeeps you healthy and protected!
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Step 5: Large Intestine💧 The Last Stretch Whatever your body can't use moves into the large intestine. Here your body soaks up the leftover water to keep you from getting thirsty. Soak up the water drops! Tap each drop. 💧 💧 💧 💧 💧 Soaked: 0 / 4 The dry leftovers leave the body when you go to the toilet. 🚽
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Build the Journey🧩 Put the Journey in Order Drag each body part into the right box, from the first stop to the last. (On a tablet, tap a tile then tap a box.) Food pipe Small intestine Mouth Large intestine Stomach 1. ? 2. ? 3. ? 4. ? 5. ?
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You did it!🎉🍎 You Followed the Whole Journey! Let's recap the path of one bite of food: 👄 Mouth — teeth chew, spit softens. ⬇️ Food pipe — squeezes the food down. 🫃 Stomach — churns it into soup. 🌈 Small intestine — grabs the nutrients. 💧 Large intestine — soaks up water. Now you know how your body turns lunch into the energy that helps you run, think and grow. Well done, explorer! 🌟 Tip: chewing slowly really does help your tummy. Try it at dinner tonight!
Frequently asked questions
- What are the main organs of the digestive system?
- The main organs are the mouth, oesophagus (food pipe), stomach, small intestine and large intestine. Each one handles a different stage, from chewing the food to absorbing nutrients and water.
- What does the small intestine do?
- The small intestine is a long, coiled tube where most digestion is completed and where nutrients from the food soup are absorbed into the blood. It is the body's main site for soaking up the goodness from food.
- Why do we need to chew our food?
- Chewing breaks food into smaller pieces and mixes it with saliva, which softens it and starts digestion. This makes the food easier to swallow and faster for the rest of the body to break down.
- What is the difference between the small and large intestine?
- The small intestine absorbs most of the nutrients from food, while the large intestine absorbs leftover water from the undigested remains. What is left after that becomes waste the body removes.
- Is the digestive system part of the Singapore primary Science syllabus?
- Yes. The human digestive system is taught under the topic of systems in living things, helping pupils understand how the body obtains energy and nutrients from food.
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