Having "hand-on-experience" is one of the basic methods in Montessori-Paedagogic. Meanwhile the importance to literally understand with hands and all senses is confirmed by many psychological studies and experienced in all ages of pupils.

Anthony Arley, teacher in Axim, Western Ghana, who atttended both of the workshops in 2017 and 2018 uses a material, that can be found everywhere in the country, costs nothing and can dry in the sun: clay. See his class, working on different shapes and objects.