How Digestion Works

How Digestion Works

Grade 8 · Science · 45 min

What's Included

Learning Objective

I understand and can explain how food is digested in the digestive system.

Warm-Up Video

TED-Ed · 4:57

How your digestive system works - Emma Bryce

Guided Notes

3 key 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.

Practice Questions

10 questions · Multiple choice & Short answer & Fill in the blank

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.

Teacher Guide

Get the complete package:

  • Answer keys for all questions
  • Differentiation strategies
  • Extension activities
  • Printable student handouts