Young Explorers: Investigating Our World · 1st Class

Active learning ideas

Building and Testing Prototypes

Active learning works for Building and Testing Prototypes because students need to experience the trial-and-error cycle firsthand to grasp how materials, forces, and design choices interact. When students physically build and test their ideas, they move beyond abstract concepts to concrete evidence of how energy, forces, and motion function in real scenarios.

• NCCA Curriculum Specifications
• NCCA: Primary - Materials
• NCCA: Primary - Designing and Making

• 25–45 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Project-Based Learning
• 30 min · Pairs

Pairs: Marble Ramp Challenge

Pairs sketch a ramp design, build it from cardboard and books, then test marbles from different heights and angles. They measure roll distances with rulers and discuss adjustments for smoother travel. Redesign and retest once.

Construct a functional prototype based on a chosen design.

Facilitation Tip

During the Marble Ramp Challenge, encourage students to sketch their ramp before building and label where they predict the marble will stop.

What to look for

Observe students as they build their prototypes. Ask: 'What part of your design are you working on now?' and 'What do you think will happen when you test this part?'

• Apply
• Analyze
• Evaluate
• Create
• Self-Management
• Relationship Skills
• Decision-Making

Activity 02

• Project-Based Learning
• 45 min · Small Groups

Small Groups: Straw Bridge Build

Groups construct bridges from straws, pipe cleaners, and tape to span a 20cm gap. They add weights like coins one by one until collapse, record the maximum load, and improve stability. Share results class-wide.

Analyze the performance of the prototype during testing.

Facilitation Tip

For the Straw Bridge Build, remind groups to measure the distance between supports before adding weight to ensure consistent testing conditions.

What to look for

After testing, ask students: 'What was one thing your prototype did well?' and 'What is one change you could make to help it work even better next time?'

• Apply
• Analyze
• Evaluate
• Create
• Self-Management
• Relationship Skills
• Decision-Making

Activity 03

• Project-Based Learning
• 40 min · Pairs

Whole Class: Paper Boat Float Test

As a class, review boat designs, then in pairs build and decorate paper boats. Test in a water tray by adding weights; note sink points and redesign for better buoyancy. Chart class averages.

Identify areas for improvement in the prototype's design.

Facilitation Tip

In the Paper Boat Float Test, have students predict how many pennies their boat will hold before adding any, then compare predictions to results.

What to look for

Provide students with a simple worksheet. Ask them to draw their prototype and write or draw one thing they learned from testing it.

• Apply
• Analyze
• Evaluate
• Create
• Self-Management
• Relationship Skills
• Decision-Making

Activity 04

• Project-Based Learning
• 25 min · Individual

Individual: Spinner Toy Prototype

Each student builds a spinner from card, string, and a pencil. Test spin time and speed, tweak weight or shape for longer spins, and log changes. Pair up to compare final versions.

Construct a functional prototype based on a chosen design.

Facilitation Tip

While students work on their Spinner Toy Prototype, ask them to explain how they think air will move the spinner based on its shape.

What to look for

Observe students as they build their prototypes. Ask: 'What part of your design are you working on now?' and 'What do you think will happen when you test this part?'

• Apply
• Analyze
• Evaluate
• Create
• Self-Management
• Relationship Skills
• Decision-Making

A few notes on teaching this unit

Teachers should approach this topic by framing failure as a necessary step in engineering, not a setback. Guide students to focus on one variable at a time during testing, as this builds scientific reasoning skills. Avoid giving solutions; instead, ask questions like 'What part seems to be causing the issue?' to foster problem-solving. Research shows students retain concepts better when they document their process and reflect on outcomes.

Successful learning looks like students identifying at least one variable in their prototype that affected performance, recording clear observations during testing, and using those observations to explain one specific change they would make next time. Students should also articulate how their design relates to the forces at work, such as gravity or friction.

---

Watch Out for These Misconceptions

• During the Marble Ramp Challenge, watch for students who assume the first ramp they build will work perfectly.

  Redirect students to test their ramp immediately and note where the marble stops or tips. Ask, 'What part of the ramp seems to be causing the marble to stop early?' and guide them to adjust that section before rebuilding.

• During the Straw Bridge Build, some students may believe adding more straws will automatically make the bridge stronger.

  Have students weigh their bridge after each straw addition during testing. Ask, 'Is the bridge holding more weight now, or is it just heavier?' to highlight the balance between strength and weight.

• During the Paper Boat Float Test, students may test by randomly adding pennies without tracking how many were added.

  Provide a tally sheet with spaces for each penny added and ask students to mark the count as they go. Then ask, 'How does the boat change as you add more weight?' to link observation to results.

---

Methods used in this brief

• Project-Based Learning