Wie macht man Riesen-Seifenblasen? - Hilton, Hélène; Mitchem, James; Rybarczyk, Marta; Ling, Mary; Smith, Penny; Parfitt Hunt, Rachael; Milner, Charlotte; Ickler, Ingrid; Coltman, Penny; King, Dave; Johnson, Lol (Forscher-Werkstatt)