17.1 Nutrition Education: Definition, Principles of Learning, Methods, and Teaching Aids
Key Takeaways
Nutrition education is any combination of educational strategies, with environmental supports, designed to help people voluntarily adopt healthy food choices and nutrition behaviors.
Dale's Cone of Experience arranges learning experiences from the most concrete (direct, purposeful experience) to the most abstract (verbal symbols).
A method demonstration shows step by step how to do something, while a result demonstration shows the outcome of a practice compared with the usual practice.
Teaching aids should be accurate, simple, culturally appropriate, visible to the whole audience, and pretested with the intended learners.
The WHO Five Keys to Safer Food are keep clean, separate raw and cooked, cook thoroughly, keep food at safe temperatures, and use safe water and raw materials.
The nutrition education competency area of the Community and Public Health Nutrition table of specifications asks examinees to define nutrition education, explain its principles, compare teaching aids and materials, and identify teaching tools. The Foods and Food Service Systems subject also includes teaching aids for food preparation, sanitation, and safety.
What Nutrition Education Is
A widely used definition (Contento) describes nutrition education as any combination of educational strategies, accompanied by environmental supports, designed to facilitate voluntary adoption of food choices and other food- and nutrition-related behaviors conducive to health and well-being. Key ideas:
- The goal is behavior change, not only knowledge.
- Environmental supports (such as healthy school canteens or affordable vegetables) make the healthy choice easier.
- Change is voluntary: people decide based on motivation and ability.
Related terms include IEC (information, education, and communication), BCC (behavior change communication), and SBCC (social and behavior change communication), which adds work on social norms and policies.
Principles of Learning and Teaching
Adult learning (andragogy, Knowles):
- Adults are self-directed and want to know why they should learn something.
- They bring experience, which should be used in discussion.
- They are ready to learn what helps them solve real problems.
- They prefer practical, problem-centered learning.
- Internal motivation, such as a child's health, drives learning.
General teaching principles:
- Start from the known and move to the unknown; from simple to complex.
- Focus on a few practical behaviors rather than many facts.
- Encourage active participation and learning by doing.
- Repeat key messages through different channels.
- Use local foods, language, and examples.
- Give positive, encouraging messages and recognize progress.
- Use two-way communication and check understanding.
Domains of learning (Bloom):
| Domain | Focus | Example objective |
|---|---|---|
| Cognitive | Knowledge and thinking | Mothers will name three iron-rich foods |
| Affective | Attitudes, values, feelings | Mothers will express confidence in breastfeeding in public |
| Psychomotor | Physical skills | Mothers will prepare mashed squash with fish for a 7-month-old |
Communication model (Berlo's SMCR): a source sends a message through a channel to a receiver, with feedback completing the loop. Barriers include technical language, noise, distrust of the source, cultural differences, and low literacy.
Dale's Cone of Experience
Edgar Dale arranged learning experiences from concrete to abstract:
- Direct, purposeful experiences (most concrete)
- Contrived experiences (models, simulations)
- Dramatized experiences (role play)
- Demonstrations
- Study trips (field trips)
- Exhibits
- Educational television and motion pictures
- Recordings, radio, and still pictures
- Visual symbols (charts, graphs)
- Verbal symbols (words; most abstract)
Learners with little background benefit from more concrete experiences. The popular claim that people remember "10% of what they read and 90% of what they do" is often attached to Dale's cone, but Dale did not publish those percentages.
Teaching Methods
| Method | Best use | Limitations |
|---|---|---|
| Lecture or talk | Large groups; introducing information | One-way; low retention |
| Group discussion | Sharing experiences; changing attitudes | Needs a skilled facilitator |
| Method demonstration | Teaching a skill step by step, such as preparing complementary food | Small groups; needs materials |
| Result demonstration | Showing outcomes, such as a backyard garden compared with bare land | Takes time to produce results |
| Cooking demonstration with return demonstration | Skills practice and confirming learning | Needs equipment and food |
| Role play and drama | Exploring feelings and practicing responses | Some participants feel shy |
| Storytelling and puppet shows | Children and low-literacy audiences | Preparation time |
| Home visits and counseling | Individual problems and follow-up | Time-consuming |
| Mass media and social media | Reaching many people quickly | Little feedback; misinformation competes |
| Campaigns and events | Nutrition Month every July (PD 491) and other observances | Short-term unless followed up |
Teaching Aids and Materials
| Type | Examples | Strengths | Limitations |
|---|---|---|---|
| Real objects and food models | Actual foods, replica servings, Pinggang Pinoy plate | Concrete; show portion sizes | Can spoil or be costly |
| Non-projected visuals | Posters, charts, flip charts, flash cards, flannel boards | Low cost; reusable; no electricity | Limited audience size |
| Print materials | Leaflets, pamphlets, recipe cards | Take-home reminders | Need literacy |
| Audio | Radio programs, jingles | Reach remote areas | No visuals |
| Audiovisual | Videos, slide presentations | Engaging; show processes | Need equipment and power |
| Digital | Social media posts, short videos, mobile apps | Wide reach; interactive | Unequal internet access |
Criteria for selecting or evaluating aids: accurate and current; simple, with one main idea; relevant to the audience; culturally appropriate; large and clear enough to be seen; attractive; durable and low cost; and pretested.
Teaching Aids for Food Preparation, Sanitation, and Safety
- Handwashing posters at sinks showing each step and the 20-second scrub.
- Color-coded cutting board charts to prevent cross-contamination.
- Temperature danger zone posters (about 5-60 °C) and thermometer calibration guides.
- Standard operating procedure cards at workstations for cleaning and sanitizing.
- Recipe cards with photos of correct portion and plating.
- Allergen charts for menu items.
- Return demonstrations where food handlers show the correct procedure after training.
- The WHO Five Keys to Safer Food: keep clean; separate raw and cooked; cook thoroughly; keep food at safe temperatures; use safe water and raw materials.
Which learning experience is most concrete on Dale's Cone of Experience?
Watching a video on preparing complementary food
Looking at a poster of the Pinggang Pinoy plate
Listening to a radio talk on breastfeeding
Preparing complementary food in a hands-on session
An ND sets this objective: "By the end of the session, mothers will prepare mashed squash with flaked fish for a 7-month-old." Which domain of learning does it target?
Cognitive
Affective
Psychomotor
Social norms
A municipal ND sets up two backyard plots: one with improved composting and one with the usual practice, and invites farmers to compare the harvests. What teaching method is this?
Result demonstration
Method demonstration
Role play
Key informant interview
Sections you finish are checked off in the contents.