The Living World: Foundations of Biology · 6th Year

Active learning ideas

How Our Body Changes and Grows

Active learning works well for this topic because students need to see, touch, and move to grasp changes that happen over time and in stages. Hands-on activities help them connect abstract ideas about growth to real experiences, making patterns visible and memorable.

• NCCA Curriculum Specifications
• NCCA: Primary - SPHE
• NCCA: Primary - Living Things

• 30–50 min
• Pairs → Whole Class
• 4 activities

Activity 01

• 45 min · Pairs

Timeline Activity: My Growth Story

Students draw a personal timeline from baby to present, marking height changes, lost teeth, and new skills. They add future predictions based on class discussions. Pairs share timelines and note similarities. Display on a class wall for ongoing reference.

What are some ways your body has changed since you were a baby?

Facilitation Tip

During the Timeline Activity, provide students with a mix of exact and estimated data points to emphasize that growth is not perfectly predictable for everyone.

What to look for

Provide students with a worksheet containing three columns: 'Baby', 'Child', 'Teenager'. Ask them to list two physical changes they have experienced or observed in each stage. Then, ask them to write one sentence about a healthy habit that supports growth.

Activity 02

• Stations Rotation
• 50 min · Small Groups

Stations Rotation: Healthy Habits Stations

Set up stations for diet (sort food cards by nutrients), exercise (measure heart rates before/after jumping jacks), sleep (track a week's sleep logs), and hygiene (demonstrate handwashing techniques). Groups rotate every 10 minutes, recording impacts on growth.

How do our bodies know when to grow?

Facilitation Tip

For the Healthy Habits Stations, set up each station with a clear visual (like a food pyramid or an empty plate) so students can see how nutrients relate to growth.

What to look for

Display images of individuals at different life stages (infant, young child, teenager, adult). Ask students to verbally identify the stage and list one key physical characteristic associated with it. Use this to gauge immediate recall of developmental stages.

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

Activity 03

• 30 min · Whole Class

Role-Play: Stages of Growth

Assign roles as baby, child, teen, adult; students act out physical changes and needs at each stage. Whole class discusses cues like hormone signals. Debrief with sticky notes on what surprised them.

What are some healthy habits that help our bodies grow strong?

Facilitation Tip

When students role-play stages of growth, give them specific hormone or body system cards to hold up during their presentation to make the science concrete.

What to look for

Pose the question: 'Imagine you are advising a younger sibling about growing up. What are the three most important things you would tell them about how their body will change and how to keep it healthy?' Facilitate a brief class discussion, noting common themes and misconceptions.

Activity 04

• 35 min · Individual

Measurement Challenge: Class Growth Chart

Measure and plot each student's height and arm span on a large chart. Compare to averages from NCCA resources. Individuals predict changes by next year and track monthly.

What are some ways your body has changed since you were a baby?

Facilitation Tip

For the Measurement Challenge, invite students to measure not just height but arm span and leg length to reveal how body proportions change over time.

What to look for

Provide students with a worksheet containing three columns: 'Baby', 'Child', 'Teenager'. Ask them to list two physical changes they have experienced or observed in each stage. Then, ask them to write one sentence about a healthy habit that supports growth.

A few notes on teaching this unit

Teachers should avoid presenting growth as a single upward line and instead emphasize variability and sequencing. Research shows that students learn best when they see growth as a series of interconnected systems (skeletal, muscular, hormonal) rather than isolated facts. Encourage students to trace changes backward from adulthood to infancy to build deeper understanding of cause and effect.

Successful learning looks like students using accurate vocabulary to describe growth stages, identifying healthy habits that support development, and recognizing that growth varies by individual. They should also connect physical changes to internal processes like hormones and nutrition.

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Watch Out for These Misconceptions

• During the Timeline Activity, watch for students assuming all classmates grew at the same rate.

  Ask students to compare their timelines side by side and mark where their growth spurts started, using different colors for each person to highlight individual patterns.

• During the Healthy Habits Stations, watch for students thinking eating more always means growing taller.

  Have students sort food images into 'supports growth' and 'does not directly increase height' categories, then discuss how protein and calcium contribute to bone and muscle while excess sugar stores as fat.

• During the Role-Play: Stages of Growth activity, watch for students describing growth as happening all at once.

  Give each group a hormone card (like growth hormone or estrogen) and ask them to physically demonstrate how the hormone signals the body to grow in specific areas first, such as legs before the torso.

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Methods used in this brief

• Stations Rotation