The new GAM (Gonzagarredi) materials are identical to the original GAM materials.
The GAM materials are very well made and generally have a satin finish. All products are approved by AMI (association Montessori International)
Thermic sense is refined through exercises of pairing and grading. The bottles are chrome-plated copper for conductivity, and are identical in appearance to prevent visual matching. The set includes a wooden box with two compartments that holds 8 bottles with screw-on tops.
