b'Sensorial Smelling BottlesSound BoxesThe Smelling Bottles are used to refine the olfactory senseThe Sound Boxes develop auditory discrimination through through matching. The teacher prepares the bottles withexercises in pairing and grading a series of sounds. This a variety of pairs of scents. The set consists of a woodenitem consists of two sets of 6 sealed wooden cylinders tray that holds 12 glass bottles - 6 coloured dark gray,graded from very soft to loud that contain materials that 6 coloured light gray. make a distinctive sound when shaken.Item Number: 001500 Item Number: 001600$99.95 $134.95 Constructive TrianglesThe Constructive Triangles give the child practical experience in plane geometry. The set consists of: 2 rectangular boxes, 1 triangular box, 1 small hexagonal box, and 1 large hexagonal box, each containing triangles of differing size, shape and colour.Item Number: 004900$399.95Nienhuis Montessori 23'