Science · 5th Year

Active learning ideas

Diet and Nutrition

This topic explores the fundamental relationship between what we eat and how our bodies function. In the Leaving Certificate Applied (LCA) Science and Health module, students move beyond simple food groups to analyze the chemical components of nutrition, including carbohydrates, lipids, proteins, vitamins, and minerals. They examine the energy values of different foods and the specific roles each nutrient plays in maintaining homeostasis and preventing deficiency diseases.

• NCCA Curriculum Specifications
• NCCA Leaving Certificate Applied Science, Module 1: Science and Health, Unit 1: Diet and Health
• NCCA Leaving Certificate Applied Science, Module 1: Science and Health, Unit 2: The Human Body

• 30–60 min
• Pairs → Whole Class
• 3 activities

Activity 01

• Stations Rotation
• 60 min · Small Groups

Stations Rotation: Food Chemistry Lab

Set up four stations where students test common foods for starch (iodine), glucose (Benedict's), protein (Biuret), and fats (brown paper test). Students rotate in small groups, recording results and identifying which 'hidden' nutrients are in processed snacks.

What are the essential nutrients required for a healthy body?

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Activity 02

• Think-Pair-Share
• 30 min · Pairs

Think-Pair-Share: The Energy Balance

Students calculate the caloric content of a typical 'takeaway' meal versus a home-cooked equivalent. They first work individually, then pair up to discuss how activity levels must change to burn those calories, finally sharing their findings with the class.

How can we test foods for different nutritional components?

• Understand
• Apply
• Analyze
• Self-Awareness
• Relationship Skills

Activity 03

• Role Play
• 45 min · Pairs

Role Play: Nutritional Consultant

Students act as nutritionists for different 'clients' (e.g., a marathon runner, a sedentary office worker, or a growing toddler). They must design a one-day meal plan based on specific NCCA dietary guidelines and justify their choices to the client.

What are the long-term effects of an unbalanced diet?

• Apply
• Analyze
• Evaluate
• Social Awareness
• Self-Awareness

A few notes on teaching this unit

---

Watch Out for These Misconceptions

• All fats are bad for your health.

  Students often believe fats should be eliminated entirely. Use a collaborative sorting activity to distinguish between essential fatty acids needed for brain function and cell membranes versus trans fats, helping them see the biological necessity of healthy fats.

• Sugar-free drinks are always a healthy alternative.

  Many students ignore the acidity and artificial additives in diet sodas. A hands-on investigation into pH levels of various drinks can surface the idea that 'healthy' is multi-dimensional, involving more than just calorie counts.

---

Methods used in this brief

• Stations Rotation
• Think-Pair-Share
• Role Play