In this article, Robin James describes the Sand Yacht Challenge. The race took place on sand between small, wind-powered land yachts made by groups of children from four local schools. The project provided a term of collaborative opportunities at the designing and testing stage, followed by a competition when the students raced them. It was ultimately a team of year 5 girls (ages 9-10) whose long, flexible axle coped best with this fickle terrain on race day.