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1.2: Introduction to Digestion and Nutrition

Difficulty Level: At Grade Created by: CK-12
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  1. Why Do We Eat?
  2. Food Is Fuel
  3. Mouth to Stomach in One Swallow
  4. A Journey through the Intestine
  5. Food for life
  6. Staying Healthy
  7. Food Nutrient Chart
  8. Glossary


H. Craig Heller, Principal Investigator

Mary L. Kiely, Project Director

Text Authors

H. Craig Heller, James V. Lawry

Activity Authors

James V. Lawry, Stan Ogren, Marjorie Gray, Geraldine Horsma

Project Editor

Dennis McKee

Photo Credits

  • 1 (top center): Bernd Wittich/Visuals Unlimited
  • 2 (bottom center): Robert E. Daemmrich/Tony Stone Images
  • 14 (top center): Phil Degginger/Tony Stone Images
  • 24 (top center): AP/Wide World Photos
  • 34 (top center): Cabisco/Visuals Unlimited
  • 47 (top center): “The Field Museum” #A76851, Chicago, Illinois
  • 48 (top center): W.A. Banaszewski/Visuals Unlimited
  • 48 (middle left): Corbis-Bettmann
  • 48 (bottom left): James Mayo/Chicago Tribune
  • 56 (top center): Terry Donnelly/West Stock

Data Sources

  • Food Nutrient chart: Morrill, Judi, Sheri Bakun, and Suzanne Murphy. Are You Eating Right? San Jose: Department of Nutrition and Food Science, San Jose State University, 1992. Whitney, Eleanor Noss, and Sharon Rady Rolfes. Understanding Nutrition, 7th ed. St. Paul: West Information Publishing Group, 1996.
  • FAO information: Food and Agriculture Organization (FAO), Food Security and Nutrition. Prepared for the 1996 World Food Summit.

Originally Published by Everyday Learning Corporation

Everyday Learning Development Staff


Steve Mico, Leslie Morrison, Susan Zeitner


Fran Brown, Annette Davis, Jess Schaal, Norma Underwood

ISBN 1-57039-683-3

Stanford University's Middle Grades Life Science Curriculum Project was supported by grants from the National Science Foundation, Carnegie Corporation of New York, and The David and Lucile Packard Foundation. The content of the Human Biology curriculum is the sole responsibility of Stanford University's Middle Grades Life Science Curriculum Project and does not necessarily reflect the views or opinions of the National Science Foundation, Carnegie Corporation of New York, or The David and Lucile Packard Foundation.

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Date Created:
Feb 23, 2012
Last Modified:
Jun 13, 2016
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