Skip to content
Wonderkids Bali

Wonderkids STEM Lab · 6–10 years

Build a Bridge – Can You Build a Bridge That Holds Weight?

What makes a bridge strong? Why do engineers use triangles and supports? And how much weight can your own bridge hold? In Build a Bridge, children step into the role of young engineers and take on a real STEM challenge: designing and building a bridge that can hold weight. We begin by exploring different shapes and structures to discover what makes them strong. Children will experiment with triangles, supports and different ways of distributing weight before sketching their own bridge design. Then it is time to build! Once their bridge is complete, children will put it to the test by gradually adding weight and observing what happens. If the bridge bends, moves or collapses, that is all part of the engineering process. Children will investigate what went wrong, redesign their structure and try again. A hands-on STEM challenge where creativity, engineering and problem-solving come together.

What will children do?

What makes a bridge strong? Why do engineers use triangles and supports? And how much weight can your own bridge hold? In Build a Bridge, children step into the role of young engineers and take on a real STEM challenge: designing and building a bridge that can hold weight. We begin by exploring different shapes and structures to discover what makes them strong. Children will experiment with triangles, supports and different ways of distributing weight before sketching their own bridge design. Then it is time to build! Once their bridge is complete, children will put it to the test by gradually adding weight and observing what happens. If the bridge bends, moves or collapses, that is all part of the engineering process. Children will investigate what went wrong, redesign their structure and try again. A hands-on STEM challenge where creativity, engineering and problem-solving come together.

What will children learn?

  • 🌉 Explore what makes bridges and structures strong and stable.
  • 🔺 Discover why triangles and supports are commonly used in engineering.
  • 📐 Develop an understanding of shapes, geometry and structural design.
  • ✏️ Practice the engineering process of planning and sketching before building.
  • ⚖️ Explore how forces and weight affect a structure.
  • 🧠 Strengthen critical thinking and problem-solving skills by improving their designs.
  • 🛠️ Learn that testing, failure and redesigning are important parts of engineering.
  • 💡 Use creativity to develop their own solutions to a real-world challenge.

How the activity works

Predict → Test → Observe → Discuss

Teacher

Fradha Intan Arassah

Lead Educator

What parents should know

At ages 6–10, children are ready to move beyond simply observing experiments and begin designing solutions to problems themselves. Build a Bridge introduces children to the engineering design process in an age-appropriate and playful way. Instead of being given one “correct” bridge to copy, children are encouraged to think about their own design, build it and discover through testing whether their ideas work. An important part of this activity is that a bridge does not have to work perfectly on the first attempt. If it bends or collapses during testing, children can investigate why, make changes and test it again. This process helps children understand that mistakes are useful information. By planning, building, testing and improving, they develop persistence, logical thinking and confidence in solving problems independently. And, of course, the exciting question at the end will be: how much weight can their bridge actually hold?

Register Child