Teacher Facilitation Guide

Lesson: Fueling the Machine | Subject: Health (Grades 7-8)

Total Time

45-50 Min

Learning Objectives

Differentiate between the primary functions of Carbs, Fats, and Proteins.
Identify "Red Flags" in dietary marketing.
Explain the biological consequence of eliminating a macronutrient group.

Material Checklist

• "Fueling the Machine" Slide Deck
• "Body Battles" Roleplay Cards (1 set per group)
• "Macro Master" Exit Tickets (1 per student)
• Whiteboard/Markers for Warm-up

Instructional Flow

00:00 - 00:05 | Warm-Up: Sort It Out

Display various food images (or write names) on the board. Ask students to shout out which category they belong to. Common Trap: Avocados (Fat), Cheese (Protein/Fat mix), Beans (Protein/Carb mix). Emphasize that most foods are a mix, but we look for the dominant nutrient.

00:05 - 00:15 | Critical Viewing

Video: "How to spot a fad diet - Mia Nacamulli"

[1:50] Metabolic Adaptation

Ask: "Why does the body slow down its metabolism during a famine/crash diet?" (Answer: Survival mechanism to save energy).

[2:20] Red Flag #1

Ask: "If a diet cuts out carbs entirely, what happens to our brain's main fuel source?"

00:15 - 00:35 | Activity: The Balanced Plate Roleplay

Divide the class into 4 groups. Assign 3 groups a "Body Role" (The Thinkers, The Builders, The Protectors). You (the teacher) act as the "Fad Dieter."

Your Script Hooks:

"Carbs are just sugar, I'm cutting them to be healthy!" (Wait for 'The Thinkers' to argue for brain fuel).
"I don't need fat, it just makes me fat!" (Wait for 'The Protectors' to argue for vitamins and hormones).
"I'll only drink this green juice powder for a month!" (Ask them to identify the Red Flag).

00:35 - 00:45 | Exit Ticket & Wrap-up

Distribute the exit tickets. Remind students that nutrition is personalized—not a mass-marketed fix.

Quick Reference: Macro Functions

Carbohydrates

Glucose for the brain; primary fuel for high-intensity activity.

Protein

Building and repairing muscle, tissue, and enzyme production.

Fats

Hormone production, brain health (insulation), absorbing vitamins A, D, E, K.

Macro Master Teacher Guide

Macro Master Teacher Guide