The student was tasked with using marshmallows and toothpicks to model 3D shapes based on clues provided. They created models of a cube, square pyramid, pentagonal prism, pentagonal pyramid, hexagonal pyramid, and octagonal prism. While it was fun to construct the shapes, sticking the marshmallows together with toothpicks was challenging due to the marshmallows' stickiness. Through this activity, the student learned about the faces, vertices, and edges of 3D shapes.