Experimental science; taking apart; finding source of motion or noise
Nature interest; animals, birds, insects, flowers; watching actions, noting striking characteristics of appearance
Interest in experimenting with material (2 to 4 years); in making for use (4 to 6 years)
All work crude; materials large, coarse, utilizing fundamental muscles; periods short, to avoid strain of eyes or nerves
Handcrafts:
(a) Building, digging, sand play (from one year)
(b) Carpentry, drawing, painting, modeling (from two years)
(c) Cutting, pasting, heavy paper construction (from 4 years)
(d) Coarse weaving, cardboard construction (from 5 years)