Robbie: Build a bridge

Robbie: Build a bridge puts you in charge of a robot with places to go. Your task is to design and assemble crossings that will carry Robbie safely over each chasm. The catch? You're working with limited funds and a selection of materials, each with its own strengths and weaknesses. Wood is cheap but fragile, while steel offers more durability at a higher cost. Every piece you place factors into the overall balance and stability, so careful planning is key. The game is all about experimentation and a bit of trial and error. You'll examine each gap, sketch out a design in your head, and then start building. Once you're satisfied, initiate a test run to see if your structure holds up under Robbie's weight. If it crumbles, you can adjust your approach and try again. With each successful crossing, new challenges appear, offering a satisfying mix of creativity and problem-solving.

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Robbie: Build a bridge

Common Core State Standards

Every game supports specific Common Core standards. Browse the full standards library.

MP3Argue with math MP1Make sense of problems MP7Use structure MP4Model with mathematics MP2Reason abstractly 1.G.A.1Shape attributes K.G.A.1Position words 2.G.A.1Draw shapes with attributes

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3rd Grade · 4th Grade · 5th Grade

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What is Robbie: Build a bridge

Put your engineering cap on and help Robbie cross the gaps. Design, build, and test bridges that actually hold up under pressure.

How to Play

Select materials from the available options and place them on the construction grid to form a bridge. Once your design is ready, hit the test button to see if it can safely carry Robbie across.

Tips for Playing

Start with simple wooden beams to grasp the basics before spending on pricier materials.
Look at the gap width and Robbie's weight to estimate how much support you'll need.
Use triangles in your bridge design to add extra strength without using too many resources.
Test early and often, and don't be afraid to scrap a design that isn't working.
Keep an eye on your budget and try to save materials for tougher levels.

Frequently Asked Questions

What is the goal in Robbie: Build a bridge?

The goal is to construct a bridge using the given materials to get Robbie from one side of the gap to the other without it collapsing.

Can I use any materials I want?

You have a selection of materials like wood and steel, but each has a cost and different properties, so you need to choose wisely based on the level's requirements.

How do I know if my bridge will work?

You can test your bridge after building. The game simulates physics, so if the bridge isn't stable, it will break, and you can modify it until it works.

Is there a budget limit in the game?

Yes, each level provides a limited budget. You'll need to build your bridge without exceeding the amount of money available.

What happens if my bridge collapses?

If the bridge collapses during the test, Robbie won't make it across, and you'll need to rebuild and try a different approach. It's all part of the learning process.