How Digestion Works
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Objective
I understand and can explain how food is digested in the digestive system.
Part 1 of 4
Warm-up video
TED-Ed · 4:57Vetted channel
We don't generate video — this one is by TED-Ed on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
The digestive system is comprised of ten organs covering nine meters and transforms food into nutrients and energy.
- 2
The gastrointestinal tract transports food, while the pancreas, gallbladder, and liver break down food using special juices.
- 3
After about three hours in the stomach, the bolus becomes a frothy liquid called chyme, which moves into the small intestine where fats are dissolved by bile.
Part 3 of 4
Practice
10 questions
What is the main function of the digestive system?
Name one body part that is NOT a main component of the digestive system, as described in the video.
Part 4 of 4
Exit ticket
Quick comprehension check
“Draw a simple diagram showing each of these organs in the digestion process: mouth, esophagus, stomach, small intestine, and large intestine.”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
Student Handout
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