One Box: Engineering Challenges

One Box: Engineering Challenges is an English-language digital activity collection. 12 tabletop mechanisms with clear constraints. It includes 12 activities with illustrated instructions, printable sheets and a Start here guide. The image gallery provides visual references. Download the PDFs and print only the sheets needed; paper, tools and assembly materials are supplied by the buyer. No physical kit is shipped. Follow each activity's specific cutting, assembly and safety instructions. This is a separate optional collection.