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Rocket & Raven

A Rocket & Raven series

Builder's Lab

A free online engineering course: 12 build challenges with paper, tape and cardboard.

Builder's Lab is a free online engineering course and the building counterpart to the Code Crew coding courses. Each week is one real challenge: a tower that holds a tennis ball five inches off the table, a paper airplane that flies at least 10 feet, a marble run that takes 5 seconds or more. Kids follow the design process (ask, imagine, plan, create, test, improve) with Rocket, Raven and Nova. Short lessons run Monday to Friday, and Saturday is Build Day, a family build-off with a note for the grown-up. It is written for Kindergarten to Grade 5, with a grown-up reading along and doing any cutting.

What's in every course

Courses in this series

The course is free, start to finish.

K to Grade 5 Ages 5 to 11

Builder's Lab

Free online engineering course · 12 weeks

Towers, bridges, paper airplanes, parachutes, marble runs and balloon cars. Twelve weeks of build, test and improve with household materials.

Free Self-paced online course

Frequently asked questions

What does it cost? +

Nothing. Builder's Lab is free from start to finish, with no card. A free parent account saves each kid's progress.

What ages is it for? +

Kindergarten to Grade 5. The reading is kept simple so younger kids can follow with a grown-up reading along, and the challenges have room for older kids to push further.

What materials do I need? +

Things most homes already have: paper, tape, cardboard, straws, string, paper cups, craft sticks, rubber bands, marbles, a ruler and a timer. There is no kit to buy.

Is it safe? +

A grown-up does all cutting with sharp tools, and kids never use hot glue. Nothing is launched at people or animals. Marbles come with a choking-hazard note for young siblings.

Does my kid need a tablet or computer? +

Yes. Builder's Lab is an online course, so it needs a tablet, phone or computer with a web browser. The building happens away from the screen.