This document describes an experimental study on floating concrete conducted by a group of students. Floating concrete is a type of lightweight concrete with a density lower than 1000 kg/m3 that floats on water. The study aims to identify lightweight materials that can be used to make concrete float while maintaining strength. Extended polystyrene (EPS) beads are used to replace conventional aggregates and reduce the density. The methodology involves preparing EPS-based floating concrete cubes with different proportions and testing their compressive strength and density. Test results of the raw materials are also presented.