Make sure to gather items of the three 3D shapes before class.
Suggestions: A traffic cone for the cone, a square tissue box for the cube, a ball for the sphere and a coffee can or tea can for the cylinder.
Put the shapes in four spots around the room, review what each of them are. Then sing the song, and have the children run to the objects as you sing the song.Lyrics:
I am looking for a [cube] (x4)