Serving Size Secret Slides Case File: 001
SERVING SIZE
SECRETS
Label Lab Investigation: Level 1
The Snack Trap
Look at the bag of chips on your desk.
"Pour out what you think is one serving onto the plate."
Don't look at the label yet! Just use your eyes and your stomach.
NO PEEKING AT THE LABEL!
Serving vs. Portion
Serving Size
A standardized amount of food used to calculate the nutrition info. It's measured in cups, grams, or pieces.
Portion Size
The amount of food you choose to eat for a meal or snack. It can be more or less than a serving size!
Spot the Source
Nutrition Facts
8 servings per container
Serving size 2/3 cup (55g)
TOP OF THE LABEL!
Rest of the label...
The Serving Size is always at the very top.
If you eat more than this amount, you have to do the math!
"Wait, there are HOW MANY servings in this bag?"
The Multiplier
If you eat the WHOLE bag:
Nutrients × Servings
Labels usually show info for one serving. If a bag has 3 servings and you eat it all, you just ate 3x the calories, sugar, and fat!
Quick Practice
Calories per serving: 150
Servings per bag: 2.5
Total: 375 Calories
MISSION START
01
Measure
Use the tools to see how much you actually poured.
02
Analyze
Compare your portion to the official serving size.
03
Calculate
Find out the "True Cost" of the whole package.
Portion Patrol Lesson Guide Teacher Resources | Case File 001
Portion Patrol
Instructional Guide
Lesson 1 of 5
Estimated Time: 45-60 min
Investigation Goal
The objective of this lesson is to help students distinguish between a standardized serving size and a personal portion size. Students will use mathematical reasoning to calculate the total nutritional content of a package when more than one serving is consumed.
Essential Question
"How does understanding the difference between serving sizes and portions change the way we look at food labels?"
Lab Materials
Unopened snack bags (chips, cereal, popcorn) - 1 per group
Measuring cups (1/2 cup and 1 cup)
Digital scales (optional, but recommended for grams)
Paper plates (1 per student)
Calculator (1 per student)
The Serving Size Slip-Up Worksheet
Phase 1: The Hook (10 min)
1
The "Eye Test"
Before showing the slides or handing out labels, give each student/group a bag of snacks. Ask them to pour out what they believe is one normal serving onto a plate.
Teacher Note:
Students should NOT look at the label yet. This creates a powerful 'aha' moment when they realize their portion is often 2-3x the official serving.
Phase 2: Direct Instruction (15 min)
2
Serving Size Secret Slides
Use the provided slide deck to define key terms. Focus on:
Serving Size: Standard unit for label data (NOT a recommendation of how much to eat).Portion: The actual amount someone eats.The "Hidden" Math: If you eat 2 servings, you double everything (calories, fat, sugar).
Phase 3: The Lab Activity (25 min)
3
Measurement & Calculation
Students complete "The Serving Size Slip-Up Worksheet". They will:
Measure the portion they poured in Step 1 using measuring cups.
Compare it to the official serving size on the label.
Calculate the total calories and sugar in the entire package .
Guiding Questions during Lab:
"If you ate that entire portion, how many official servings did you actually have?"
"Why do you think the serving size for cereal is so much smaller than what most kids eat?"
Phase 4: Debrief (5-10 min)
4
The Marketing Mystery
Discuss why food companies might choose small serving sizes (e.g., to make calorie counts look lower on the front of the box). Challenge students to find a food where the serving size is "the whole bag."
Differentiation
For students needing support: Provide a pre-filled "Multiplier Table" to help with the calculations (e.g., if servings = 3.5, list common calorie amounts multiplied by 3.5).
For advanced students: Ask them to calculate the percentage of their total daily calories that one portion of their snack represents (based on a 2,000 calorie diet).
Key Misconception
Students often think the Serving Size is a recommendation of how much they SHOULD eat. Emphasize that it is just a unit of measure so all nutrition info on that label is consistent.
Serving Size Slip-Up Worksheet Label Lab | Investigation 001
The Serving Size Slip-Up
Name:
Date:
1
Phase 1: The Eye Test
Record your predictions before you look at the package label.
Snack Name:
Predicted Serving Size (e.g., 10 chips, 1 cup):
2
Phase 2: The Reality Check
Now, look at the Nutrition Facts label and use your measuring tools to collect the data.
OFFICIAL Serving Size
Servings per Container
My POURED Portion
Observation:
How does your poured portion compare to the official serving on the label? Was it larger, smaller, or the same? Why do you think that is?
3
Phase 3: The Multiplier Math
Most people forget to multiply! Calculate the nutritional impact of eating the whole package.
Calories
×
Servings
TOTAL PACKAGE CALORIES
Sugar Grams
×
Servings
TOTAL PACKAGE SUGAR
"If you eat it all, you multiply it all!" - Lab Rule #1
The Five Twenty Rule Slides Case File: 002
THE FIVE-TWENTY
RULE
Decoding Percent Daily Value (%DV)
High or Low?
In this game, we don't look at grams. We look at percentages .
Mystery Food A has:
Is this food "High" or "Low" in these nutrients? How can you tell?
?
What is % Daily Value?
The % Daily Value (%DV) shows how much a nutrient in a serving of food contributes to a total daily diet .
It helps you determine if a serving of food is high or low in a nutrient without having to know exactly how many grams you need every day.
Lab Tip
"Think of it like a battery charge for your day."
The Golden Rule: 5/20
5%
or less is LOW
Aim for this with things like Sodium and Saturated Fat.
20%
or more is HIGH
Aim for this with things like Fiber, Vitamin D, and Calcium.
Seek vs. Limit
Limit These
Keep these LOW (5% or less)
Saturated Fat
Sodium (Salt)
Added Sugars
Seek These
Get these HIGH (20% or more)
Dietary Fiber
Vitamin D
Calcium & Iron
Nutrient Density
A food is nutrient dense when it provides lots of things to SEEK and very little of things to LIMIT.
Nutrient Dense
VS
Empty Calories
High or Low Game Guide Activity Guide | Case File 002
High or Low?
The 5/20 Card Game
Lesson 2 of 5
Focus: % Daily Value Mastery
The Mission
Students often get bogged down in grams and milligrams. This activity forces them to use the 5/20 Rule to make snap judgments about nutritional density. By focusing on the percentage, they learn to quickly identify which foods are "seeking" nutrients and which are "limiting" nutrients.
Game Mechanics
Students work in "Lab Pairs". You will read out a nutrient and its %DV from a "Mystery Product". Students must race to slap the HIGH, LOW, or JUST RIGHT (IN BETWEEN) zone on their desk.
Preparation
Cut out 3 cards per pair: one RED (Low), one GREEN (High), one YELLOW (Mid).
Alternatively, students can just use their "Nutrient Detective Handbook" to point.
Prepare the "Mystery Profiles" (provided below).
Investigation Profiles
Profile #A: Greek Yogurt Dense
Calcium: 25% (HIGH/SEEK)
Sodium: 3% (LOW/LIMIT)
Protein: 15% (MID)
Verdict: High calcium, low sodium. Good choice.
Profile #B: Instant Ramen Caution
Sodium: 65% (HIGH/LIMIT!)
Fiber: 2% (LOW/SEEK)
Iron: 6% (MID)
Verdict: Dangerous sodium levels, very low fiber.
Profile #C: Frozen Pepperoni Pizza Caution
Saturated Fat: 35% (HIGH/LIMIT!)
Sodium: 40% (HIGH/LIMIT!)
Vitamin D: 0% (LOW/SEEK)
Profile #D: Almonds Dense
Fiber: 14% (MID/SEEK)
Vitamin E: 37% (HIGH/SEEK)
Sodium: 0% (LOW/LIMIT)
Discussion Prompts
Q: Why is 20% "good" for Fiber but "bad" for Saturated Fat?
A: Because Fiber is a nutrient we want to seek (get more of), while Saturated Fat is a nutrient we want to limit (get less of).
Q: What happens if a food is 12% in everything?
A: It's in the "middle ground". It's not particularly high or low. For 6th graders, focus on identifying the extremes first.
Nutrient Detective Handbook Label Lab | Investigation 002
Nutrient Detective
Handbook
Detective:
Date:
The 5/20 Rule
5%
or less is Low
20%
or more is High
The Detective's Guide
LIMIT These
Saturated Fat
Sodium (Salt)
Added Sugars
SEEK These
Dietary Fiber
Vitamin D
Calcium & Iron
1
Mission: Nutrient Analysis
Look at the labels provided by your teacher. Use the 5/20 rule to categorize them.
Food Item Nutrient % Daily Value Category (Low/High/Mid) Is this good? (Seek/Limit) Sodium Fiber Sat. Fat Calcium
2
Mission: Density Debate
Define "Nutrient Density" in your own words:
Look at "Food Item X" (the mystery snack). Is it nutrient dense? Why or why not? Use %DV numbers to prove your point.
End of Case File 002 // Confidential
Sugar Alias Slides Case File: 003
SUGAR IN
DISGUISE
Identifying Hidden Sweeteners
Grams vs. Reality
Look at the bottle of sports drink. The label says:
32g
Sugar
How many sugar cubes do you think that is?
Wait for it...
The Sugar Math
4 grams
=
1 teaspoon
"One regular soda (39g sugar) contains almost 10 teaspoons of sugar!"
Total vs. Added
Total Sugars
Includes sugars naturally found in food (like the sugar in milk or fruit).
Added Sugars
The sugar added during processing. This is the one we want to WATCH closely!
The Aliases
Food companies use over 60 different names for sugar to trick you.
High Fructose Corn Syrup
Dextrose
Maltose
Evaporated Cane Juice
Agave Nectar
Barley Malt
Lab Secret: If it ends in "-ose", it's likely a sugar!
Detective Challenge
Find the "Sugar Spies" hidden in products marketed as healthy. Convert the grams into teaspoons to reveal the truth!
Sugar Forensic File Teacher Forensic File | Case File 003
Sugar Forensic File
Hidden Aliases Guide
Lesson 3 of 5
Focus: Sugar Decoding
The Investigation
The core of this lesson is deception. Students learn that food companies use complicated names to hide the amount of sugar in "healthy" foods like yogurt, granola bars, and juices. By visualizing sugar as teaspoons/cubes, the data becomes tangible.
Setup: The Cube Reveal
Display 3 products: A sports drink, a "natural" juice, and a fruit yogurt. Next to each, place a covered bowl. Inside each bowl, have the exact number of sugar cubes that represent the Added Sugar in that product.
The Formula
4g = 1 tsp
Standard Lab Ratio
• 16g sugar = 4 tsp
• 32g sugar = 8 tsp
• 48g sugar = 12 tsp
The "Sugar Spy" Directory
Use this list to help students verify their "Sweet Truth" investigations.
The "-ose" Family
Dextrose
Fructose
Glucose
Lactose
Maltose
Sucrose
Syrups & Nectars
High Fructose Corn Syrup
Agave Nectar
Maple Syrup
Malt Syrup
Sorghum Syrup
Rice Syrup
"Natural" Spies
Fruit Juice Concentrate
Evaporated Cane Juice
Honey
Coconut Sugar
Crystalline Fructose
Date Paste
Investigation Key (Teacher Only)
Granola Bar
Often contains 3+ types of sugar (Brown sugar, Brown rice syrup, Invert sugar). Total 12g sugar = 3 teaspoons.
Yogurt (Fruit)
Can have up to 26g sugar. About 12g is natural (lactose), but the rest is Added Sugar (14g = 3.5 tsp).
Pasta Sauce
Surprising hidden source! Often has 10g+ sugar per serving to cut the acidity of tomatoes.
Critical Thinking Check
Remind students that Total Sugars is not always bad (e.g., fruit), but Added Sugars are what contribute to health risks. If a label says 20g Total Sugar but 0g Added Sugar, the sugar is naturally occurring.
The Sweet Truth Investigation Label Lab | Investigation 003
The Sweet Truth
Forensic Investigation
Detective:
Date:
1
Phase 1: The Teaspoon Reveal
4 grams
Sugar
=
1 teaspoon
Sugar
Convert the following product sugar counts into teaspoons. Show your work!
Sports Drink (Blue Blast)
Sugar Grams: 32g
Teaspoons
"All-Natural" Apple Juice
Sugar Grams: 28g
Teaspoons
Breakfast Cereal (Choco-Loop)
Sugar Grams: 12g
Teaspoons
Your Mystery Item:
Teaspoons
2
Phase 2: The Alias Hunt
Look at the ingredient list for the "Mystery Granola Bar". List all the "Sugar Spies" (aliases) you can find:
Why do you think the company uses 3 or 4 different names for sugar instead of just listing "Sugar" once?
Detective's Log Summary
Based on your investigation today, what is one "health" food that surprised you with its sugar content? What will you look for next time you see that product?
Inside the Box Slides Case File: 004
INGREDIENT
INSPECTORS
Navigating Lists & Identifying Additives
Mystery Product
First 5 Ingredients:
1. Enriched Flour
2. Water
3. Sugar
4. Vegetable Oil
5. High Fructose Corn Syrup
...plus 30 more chemical-sounding items!
Can you guess what this food is?
The Rule of Weight
Ingredients are listed in order by WEIGHT , from most to least.
"The first three ingredients usually make up the bulk of the product."
HEAVIEST
At the Start
At the End
LIGHTEST
The Red Flags
Common Allergens
By law, these must be listed clearly, often in BOLD at the bottom:
Milk
Eggs
Fish
Peanuts
Wheat
Soy
Highly Processed?
If the list looks like a Science Experiment (names you can't pronounce), it's highly processed.
"Artificial colors, preservatives, and stabilizers!"
Compare the Core
Whole Food
Ingredients: Rolled oats.
Simple, 1-2 ingredients, recognizable.
Ultra-Processed
Ingredients: Whole grain oats, sugar, corn syrup, corn starch, salt, calcium carbonate, tripotassium phosphate, vitamin E...
Long list, added sugars, preservatives.
Mission: Log & Analyze
Take the Mystery Product File. Identify the top 3 ingredients, scan for red flags, and determine if it's a Real Food or a Lab Experiment.
Mystery Product Case Study Case Study Resource | Case File 004
Mystery Product
Forensic Breakdown
Lesson 4 of 5
Focus: Ingredient Quality
The Investigation
In this activity, students encounter a "Mystery List" of ingredients. The goal is to strip away the packaging and marketing, forcing students to judge a product only by what's inside.
The Reveal Strategy
Display the ingredient list on the board or hand out the Log. Have students guess what the food is. Common guesses for ultra-processed items include "plastic," "chemicals," or "medicine." The shock of the reveal (e.g., a "healthy" cereal or a popular snack cake) drives home the point of processing.
Key Skills
Identifying the "Heavy Hitters" (Top 3)
Scanning for bolded allergens
Spotting "Lab Ingredients"
Investigation Case Files
FILE #004-A: "THE REVEAL" Mystery Identity: Twinkie
Ingredient Snapshot:
Enriched Bleached Wheat Flour, Sugar, Water, Corn Syrup, High Fructose Corn Syrup, Partially Hydrogenated Vegetable Shortening (Soybean, Cottonseed, and/or Canola Oil), Whole Eggs, Dextrose... Plus 30+ additives like Polysorbate 60 and Red 40.
Inspector's Note:
"The first five ingredients include 3 types of sugar. This is basically a sugar-delivery system disguised as a cake."
Red Flag:
"Contains Partially Hydrogenated Oils (Trans Fats) and Artificial Colors (Red 40)."
FILE #004-B: "THE REVEAL" Mystery Identity: Hummus
Ingredient Snapshot:
Cooked Chickpeas, Water, Tahini (Ground Sesame), Safflower Oil, Sea Salt, Garlic, Roasted Red Pepper, Citric Acid.
Inspector's Note:
"Only 8 ingredients. All of them are recognizable whole foods. Chickpeas (high fiber) are the #1 ingredient by weight."
Allergen Scan:
"Contains Sesame. Must be noted for those with allergies."
Facilitation Questions
"Why do whole foods usually have shorter lists?"
Encourage students to think about the lack of preservatives and artificial flavors needed when the base ingredients are high quality.
"Is a long list ALWAYS bad?"
Not necessarily—a veggie soup might have many ingredients. The key is whether those ingredients are recognizable foods or lab-made chemicals.
Ingredient Inspector Log Label Lab | Investigation 004
Ingredient Inspector
Evidence Log
Inspector:
Date:
1
Phase 1: The Mystery List
Read the "Mystery List" provided by your teacher. Analyze it before the reveal.
Top 3 Ingredients (by Weight):
Allergen Scan (Are any bolded?):
Sugar Count (How many types?):
The Guess
I think this product is:
Record your guess here
2
Phase 2: Processing Analysis
Lab Ingredients
List 3 ingredients from the list that sound like they were made in a lab (names you can't pronounce or recognize):
Inspector's Verdict
Based on the ingredient list, would you categorize this food as:
Whole / Minimally Processed
Ultra-Processed / Lab Food
Explain your choice using evidence from the list:
The Reveal Reveal
The Mystery Product was actually:
Are you surprised? Why or why not? Does this change how you feel about eating this product?
Supermarket Showdown Slides Case File: 005
Supermarket
Showdown
The Final Detective Mission
The Mission
You are now a Master Nutrition Detective . Your final task is to compare two similar products and choose the one that is truly healthier.
The Rules of Engagement:
Analyze Serving Sizes
Use the 5/20 Rule
Reveal Sugar Spies
Inspect the Ingredients
BOX A
VS
BOX B
"Don't let the marketing on the front fool you!"
Building Your Case
CLAIM
"Product B is the healthier choice because..."
EVIDENCE
"The label shows it has 25% Daily Value of Fiber..."
REASONING
"This makes it nutrient dense according to the 5/20 Rule."
Beware the Impostor
Marketing Front
"Natural!"
"Whole Grain!"
"Energy!"
Many products look healthy on the front to trick your brain.
The BACK LABEL is the only place where companies have to tell the truth.
"Today, we ignore the front. We only trust the data."
How to Compare
1. Check Servings
If Box A has a 1/2 cup serving and Box B has a 1 cup serving, you have to adjust the math before you compare!
2. Total vs. Added
Which one has less Added Sugar? That's usually the winner.
3. Nutrient Density
Which one has more things to SEEK (Fiber, Vitamins) and less things to LIMIT (Sodium, Sat Fat)?
4. Ingredient Quality
Which list is shorter and easier to pronounce? Whole foods win!
IT'S SHOWDOWN TIME!
Choose Your Products
Open your "Battle of the Boxes" guide. Start your side-by-side analysis and prepare to defend your verdict.
Showdown Scoring Rubric Assessment Resource | Case File 005
Showdown Scoring Rubric
Performance Assessment
Lesson 5 of 5
Focus: Mastery & Synthesis
Culminating Performance Task
Students must perform a side-by-side analysis of two similar products (e.g., two brands of granola bars or two types of breakfast cereal). They must fill out their "Battle of the Boxes" guide and write a formal recommendation based only on label data.
Criterion Expert (4) Detective (3) Rookie (2-1) Data Accuracy All data points (serving size, %DV, sugar grams) are recorded correctly for both products. Most data points are correct; minor errors in math or transcription. Multiple inaccuracies; data does not match the provided labels. 5/20 Rule Application Accurately identifies nutrients to seek and limit using the 5/20 rule to categorize nutrient density. Correctly uses the 5/20 rule for most nutrients; some confusion on seek vs. limit. Struggles to apply the 5/20 rule or misinterprets the percentages. Ingredient Analysis Correctly identifies top 3 ingredients and finds 2+ hidden sugar aliases or red flag additives. Identifies top ingredients; finds at least 1 sugar alias or additive. Unable to identify key ingredients or find hidden additives. Evidence-Based Argument Claim is clear and supported by 3+ specific data points from the labels. Reasoning is logical. Claim is clear; supported by 1-2 data points. Reasoning is mostly sound. Claim is vague; lacks specific evidence from labels; based on personal opinion.
Final Grade Guide
14-16 Points: Mastery (Expert Detective)
10-13 Points: Proficiency (Field Ready)
0-9 Points: Needs Retraining (Lab Support)
Feedback Prompts
• "How did the serving size difference impact your math?"
• "You found the sugar spies—how did that change your verdict?"
• "Look closer at the sodium. Is that 5% or 20%?"
Battle of the Boxes Activity Label Lab | Final Showdown
Battle of the Boxes
Master Detective Certification
Name:
Side-by-Side Analysis
| Nutrient Data | Product A:
| Product B:
|
| --- | --- | --- |
| Serving Size | | |
| Total Calories | | |
| Sodium (%DV) | | |
| Added Sugar (g) | | |
| Fiber (%DV) | | |
| Vitamin / Mineral (%DV) | | |
| Top Ingredient | | |
Sugar Spy Hunt
Aliases Found in Product A:
Aliases Found in Product B:
Red Flag Audit
Processing Level Notes (Lab chemicals, artificial colors, etc):
The Final Verdict
The Healthier Product is:
Defense Statement (Use specific evidence from your data above):
Evidence Log Closed // Certified Nutrition Detective
