Global Explorers: Our Changing World · 6th Class

Active learning ideas

GPS and Navigation

Active learning helps students grasp how GPS calculates location because abstract concepts like trilateration and signal timing become concrete when tested outdoors. Moving between hands-on activities and discussions builds durable understanding of how satellites, timing, and geometry work together in real time.

• NCCA Curriculum Specifications
• NCCA: Primary - Maps, Globes and Graph Work
• NCCA: Primary - Using ICT

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

Activity 01

• Simulation Game
• 45 min · Pairs

Outdoor Orienteering: GPS vs Compass

Mark 6-8 checkpoints around school grounds with coordinates. Pairs navigate first using paper maps and compasses, recording times and paths. Switch to free GPS apps on tablets for the same route, then compare results in a class chart.

Explain how GPS receivers determine location on Earth.

Facilitation Tip

During the Outdoor Orienteering activity, remind students to record both GPS coordinates and compass bearings at each waypoint to compare precision later.

What to look for

Present students with a diagram showing a GPS receiver and signals from three satellites. Ask them to label the satellites, the receiver, and draw lines representing the distances measured. Then, ask: 'What is this process called and what information does it provide?'

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Activity 02

• Simulation Game
• 30 min · Small Groups

Trilateration Simulation: Hoop Intersections

Provide hula hoops or string to represent satellite distance circles. Students position themselves at intersections of three hoops held by classmates to model location fixes. Add a fourth for 3D height, discuss errors if circles don't intersect perfectly.

Compare and contrast traditional navigation methods with GPS technology.

Facilitation Tip

When running the Trilateration Simulation, walk students through measuring the distances between hoop centers before they attempt to calculate intersections.

What to look for

Pose the question: 'Imagine you are planning a hiking trip in the Burren. What are the advantages and disadvantages of relying solely on a GPS device compared to using a traditional map and compass?' Facilitate a class discussion, encouraging students to cite specific examples.

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Activity 03

• Simulation Game
• 50 min · Pairs

GPS Mapping Project: Local Features

Use GPS apps to record coordinates of school features like gates or trees. Pairs plot data on grid paper or digital tools to create a class map. Overlay with traditional sketch for comparison.

Assess the impact of GPS on various industries and daily life.

Facilitation Tip

In the GPS Mapping Project, have students note environmental conditions like tree cover or building density that may affect signal quality at each site.

What to look for

On an index card, have students write one sentence explaining how GPS satellites help determine location and one industry that has been significantly changed by GPS technology. Collect cards to gauge understanding of core concepts.

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Activity 04

• Simulation Game
• 40 min · Small Groups

Industry Role-Play: GPS Applications

Assign roles in farming, shipping, or emergency services. Small groups plan tasks with/without GPS, present pros and cons using props like toy vehicles. Vote on best tech integration.

Explain how GPS receivers determine location on Earth.

Facilitation Tip

During the Industry Role-Play, assign specific GPS-dependent roles so students experience how accuracy demands vary by sector.

What to look for

Present students with a diagram showing a GPS receiver and signals from three satellites. Ask them to label the satellites, the receiver, and draw lines representing the distances measured. Then, ask: 'What is this process called and what information does it provide?'

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

A few notes on teaching this unit

Teaching GPS works best when you move from simulation to real-world testing, allowing students to confront misconceptions directly. Avoid overwhelming students with orbital mechanics—focus on timing, distance, and geometry first. Research shows that outdoor navigation tasks improve spatial reasoning and retention when paired with reflective discussion about accuracy and limitations.

Successful learning looks like students explaining trilateration using hoop intersections, comparing GPS and compass readings during outdoor orienteering, and justifying when to use GPS versus traditional tools in their mapping projects. They should also identify sources of error and describe how industry roles depend on GPS accuracy.

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Watch Out for These Misconceptions

• During Outdoor Orienteering, watch for students assuming GPS works reliably in dense tree cover or under building overhangs.

  Before the hike, have students use a free GPS app to test signal strength in different outdoor settings around the school, then discuss why line-of-sight matters. During the activity, ask them to mark spots where the signal drops and hypothesize why.

• During Trilateration Simulation, watch for students believing the GPS receiver always gets a perfect fix with just three satellites.

  After they complete the hoop intersections, deliberately shift one hoop to create an unsolvable triangle and ask students to explain what went wrong. This reveals why four satellites are needed and how geometry affects accuracy.

• During Industry Role-Play, watch for students thinking GPS has fully replaced paper maps in all industries.

  Assign roles like wilderness guide, urban planner, and emergency responder so students discover where compasses or maps remain critical. After the role-play, ask each group to present one scenario where traditional tools outperform GPS.

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Methods used in this brief

• Simulation Game