The Stomach
The Stomach
Watch the video clips below to learn more about the stomach.
Video 3 How it works
FOLLOW-UP PRACTICE EXERCISES
HOW TO CARE FOR THE STOMACH
1. Chew food properly. It will make it easier for the stomach to
2. Ensure the food you eat is clean
3. Do not over eat
4. Avoid eating between meals.
5. Eat properly cooked meals
6. Allow your food to digest properly
7. Drink enough water for the day
8. Do not eat too fast.
Grade
3 Science:
Topic: The Stomach – Location, Appearance, and Structure
Duration: 1 hour
Focus Question:
Why are teeth, stomach and lungs important parts of my body?
Lesson
Objectives:
- Students will be able to locate the stomach in the
human body.
- Students will be able to describe the appearance and
structure of the stomach (size, shape, color).
Materials:
- Diagram of the human digestive system
- 3D stomach model (or printable 2D cut-outs)
- Projector/computer for videos
- Clay or playdough for STEM activity
- Worksheet for tiered evaluation
- Chromebooks
- Teacher’s Blogsite
1.
Engage (5 minutes):
Objective: Hook students' interest and activate prior knowledge.
- Activity:
Ask students, “Where do you think your food goes after you eat it?” Let
them brainstorm and share their answers. Show a picture of a whole
digestive system and ask them to identify any parts they already know.
- Discussion:
Transition to the stomach by asking, “What part of the body helps digest
food after it leaves your mouth?”
2.
Explore (10 minutes):
Objective: Students explore the topic by observing and interacting.
- Activity:
Show a short animated video that traces the journey of food through the
digestive system, focusing on the stomach. The video should highlight the
stomach's position and function. This will be projected from the teacher’s
blogsite.
- Discussion:
After the video, ask students, “Where do you think the stomach is located
in your body? What shape did you notice?” Let them share observations from
the video and think about the stomach's role.
Objective: Teacher introduces key concepts and explanations.
- Activity:
Show a detailed diagram or use a model of the stomach. Teach students the
exact location (below the rib cage on the left side) and describe its size
(similar to a fist), shape (like the letter 'J'), and colour (pinkish or
light red).
- Discussion:
Explain how the stomach's muscle walls help to break down food. Use a
simple analogy: "The stomach is like a washing machine, churning the
food to help with digestion."
3. Explain: (15 Minutes)
Students
will take turn in explain in concise terms what happens from food enters the
mouth from it enters the mouth until it enters the stomach onwards. They will be asked to prepare a concept map to depict
same.
4.
Elaborate (15 minutes):
STEM Component: Build a Stomach
Model
Objective: Students apply their learning through hands-on activities.
- Activity:
Students work in pairs to create a 3D model of the stomach using clay or
playdough. They should consider the shape (J-shaped), size (similar to a
fist), and color when designing the model. Encourage them to identify
where the stomach is placed in relation to other organs (e.g., the
esophagus leading into the stomach).
- Discussion:
Ask questions like, “Why do you think the stomach is shaped this way?” or
“How does its shape help with its function?”
5.
Evaluate (15 minutes):
Objective: Assess students' understanding with a tiered activity.
Three-Tier Evaluation Activity:
Tier 1: Labeling Activity (Basic)
- Students are given a diagram of the human body with an
empty digestive system. They must label the stomach and colour it in. This
activity will be done on their Chromebooks from the teacher’s blogsite.
Tier 2: Description Activity (Intermediate)
- Students are asked to write 3-5 sentences describing
the stomach's size, shape, and colour.
Tier 3: Drawing and Explanation (Advanced)
- Students will draw the stomach and write a paragraph
explaining its structure and how it helps in digesting food. This tier
includes explaining how its muscular structure helps with digestion.
Closure
(5 minutes):
- Wrap-up Discussion:
Recap the lesson by asking students to share one fact they learned about
the stomach.
- Exit Ticket:
Ask each student to point to where their stomach is located on their body
before leaving the class.
STEM
Component Summary:
In this lesson, students apply
engineering skills by building a model of the stomach, focusing on its
anatomical features. This hands-on activity integrates technology (video) and
science, fostering their understanding of the human body's structure and
function.
EXTEND: Complete additional activities from teacher’s blogsite.
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