AAFCS CNWE study materials
AAFCS CNWE study resources

AAFCS CNWE cheat sheet

AAFCS CNWE · Keep the key ideas within reach.

Quick reference

Wellness and Prevention

  • Wellness is a multidimensional construct: physical, emotional, intellectual, social, spiritual, occupational, and environmental dimensions are the standard seven.

  • Primary prevention acts before disease occurs (immunization, nutrition education); secondary prevention is screening/early detection; tertiary prevention is rehabilitation and limiting disability.

  • The leading modifiable behavioral risk factors for chronic disease are tobacco use, poor diet, physical inactivity, and excess alcohol intake.

  • Physical activity guideline for adults: at least 150 minutes/week of moderate-intensity aerobic activity or 75 minutes/week of vigorous activity, plus muscle-strengthening on 2 or more days/week.

  • Adequate sleep for adults is 7 or more hours per night; short sleep is associated with obesity, hypertension, and impaired glucose regulation.

  • Health belief model constructs: perceived susceptibility, perceived severity, perceived benefits, perceived barriers, cues to action, and self-efficacy.

  • Transtheoretical (stages of change) model stages in order: precontemplation, contemplation, preparation, action, maintenance (termination optional).

  • Body mass index = weight (kg) / height (m)^2; adult BMI categories: under 18.5, normal 18.5-24.9, overweight 25.0-29.9, obese 30.0 and above.

  • Social determinants of health include income, education, food security, housing, transportation, and neighborhood environment; they shape behavior options more than individual motivation alone.

Quick reference

Nutrition Principles

  • Energy values: carbohydrate 4 kcal/g, protein 4 kcal/g, fat 9 kcal/g, alcohol 7 kcal/g.

  • Acceptable Macronutrient Distribution Ranges for adults: carbohydrate 45-65% of energy, fat 20-35%, protein 10-35%.

  • AMDR for protein is 10-35% of energy; the RDA for adults is 0.8 g protein per kg body weight per day.

  • Fat-soluble vitamins are A, D, E, and K; water-soluble vitamins are the B complex and vitamin C.

  • Vitamin C and the B vitamins are heat- and water-labile, so prolonged boiling and long storage reduce their content in foods.

  • Dietary fiber recommendation is commonly 25 g/day for women and 38 g/day for men, or about 14 g per 1000 kcal.

  • Sodium intake should be limited to less than 2300 mg/day; the AI for sodium is about 1500 mg/day for adults.

  • Added sugars should contribute less than 10% of total daily energy intake.

  • Complementary proteins combine limiting amino acids (for example, rice plus beans) to yield a complete amino acid profile in a single meal or day.

Quick reference

Food Safety and Supply

  • The temperature danger zone is 40 degrees F to 140 degrees F (4 degrees C to 60 degrees C); keep time in this range under 2 hours (1 hour above 90 degrees F).

  • Bacteria grow most rapidly between 70 and 125 degrees F; the optimum growth range is roughly 41-135 degrees F.

  • The four steps of food safety are clean, separate, cook, and chill.

  • Safe minimum internal temperatures: poultry 165 degrees F, ground meats 160 degrees F, whole pork and beef roasts 145 degrees F with a 3-minute rest.

  • Hazard Analysis Critical Control Point (HACCP) has seven principles, beginning with hazard analysis and ending with recordkeeping and verification.

  • Cross-contamination is prevented by separating raw animal foods from ready-to-eat foods and using separate cutting boards and utensils.

  • Foodborne illness pathogens of concern include Salmonella, E. coli O157:H7, Listeria monocytogenes, Campylobacter, and Norovirus.

  • Food insecurity is defined as limited or uncertain availability of nutritionally adequate and safe foods; food security is its opposite.

  • The food supply chain stages are production, processing, distribution, retail, and consumption; each stage is a potential point of contamination or loss.

Quick reference

Food Planning

  • Menu planning principles: balance, variety, moderation, nutrient density, and consideration of cost, seasonality, and equipment.

  • The Dietary Guidelines for Americans are updated every 5 years; the MyPlate model divides the plate into about half fruits and vegetables, one quarter grains, and one quarter protein.

  • ChooseMyPlate emphasizes making half of grains whole grains and choosing low-fat or fat-free dairy.

  • Standard portion sizes: 3 oz cooked meat, 1 cup raw leafy greens, 1/2 cup cooked vegetables, 1 slice bread, 1 medium fruit.

  • A cycle menu repeats on a defined schedule (commonly 3-5 weeks) and is used in schools, hospitals, and other institutional settings.

  • The food budget rule of thumb is to allocate roughly 10-15% of a household's disposable income to food; the Thrifty Food Plan is the USDA basis for SNAP allotments.

  • Seasonal purchasing lowers cost and improves quality; root vegetables and squash are cheapest in fall and winter, berries and stone fruit in summer.

  • A well-planned menu accounts for dietary restrictions, cultural preferences, allergies, and texture modifications for special populations.

Quick reference

Purchase and Preparation

  • Unit pricing compares cost per unit (per ounce, per pound, or per 100 g) and is the standard method for comparing package values.

  • Reading the Nutrition Facts label: serving size and servings per container are listed first; percent Daily Value is based on a 2000-calorie reference diet.

  • Ingredient lists are ordered by descending weight; the first ingredient is the largest by weight.

  • Reducing food waste: plan meals, store properly, use FIFO (first in, first out), and repurpose leftovers within 3-4 days.

  • Moist-heat cooking methods (boiling, steaming, poaching, braising) use water or steam; dry-heat methods (roasting, grilling, frying) use hot air or fat.

  • Steaming and microwaving preserve more water-soluble vitamins than boiling because of shorter cooking time and less leaching into cooking water.

  • Blanching briefly immerses food in boiling water and then in ice water to stop enzyme action and preserve color and texture.

  • Dry storage for staples: cool, dark, dry conditions; refrigerated storage for perishables at 40 degrees F or below; freezer at 0 degrees F or below.

Quick reference

Teaching Pedagogy

  • Bloom's taxonomy levels (revised): remember, understand, apply, analyze, evaluate, create.

  • Learning domains: cognitive (knowledge), affective (attitudes), psychomotor (skills); objectives should specify the domain and observable behavior.

  • A measurable objective contains a condition, a behavior, and a criterion (for example, 'given a label, the learner will identify three nutrients with 100% accuracy').

  • Direct instruction, cooperative learning, demonstration, and inquiry are common instructional strategies; demonstration is central to food and nutrition teaching.

  • Formative assessment occurs during instruction to guide teaching; summative assessment occurs at the end to judge achievement.

  • Constructive alignment requires that objectives, learning activities, and assessments all target the same outcomes.

  • Lesson plan components: objectives, anticipatory set, materials, instructional procedures, guided practice, independent practice, and closure/evaluation.

  • Differentiated instruction adjusts content, process, or product based on learner readiness, interests, and learning profile.

Quick reference

Learning and Behavior Change

  • Behavior change theories commonly used in nutrition education: health belief model, transtheoretical model, social cognitive theory, theory of planned behavior, and ecological model.

  • Social cognitive theory constructs: self-efficacy, observational learning, outcome expectations, and reciprocal determinism.

  • Theory of planned behavior: attitude, subjective norms, and perceived behavioral control predict intention, which predicts behavior.

  • Self-efficacy is the strongest single predictor of behavior change in many nutrition education frameworks.

  • Motivational interviewing uses open-ended questions, affirmations, reflective listening, and summarizing (OARS) and supports the learner's own reasons for change.

  • SMART goals are specific, measurable, achievable, relevant, and time-bound.

  • The ecological model levels: individual, interpersonal, organizational, community, and public policy.

  • Relapse is a normal part of the change process; the maintenance stage requires strategies for coping with high-risk situations.

  • Reinforcement, shaping, and cueing are behavioral strategies; intrinsic motivation is more durable than external rewards.