What are the advantages and disadvantages of children learning table, plane and slope?
Fixed 12 degrees bevel is the best, in line with the human bodyRequirements, adjustable bevel is the worst, not as good as flat. Tune in for children to play with.
This also determines the learning table is only "simple" three uses:The first is fixed bevel, and the second is flat surface,The third is the alternate use of plane slopes,And the structure of fixed slope such as 12 degrees is seriously unreasonable,There is no scientific basis, purely human conceptual speculation.Using "flat" is more harmful than using "fixed bevel"!
Learning tables are much the same,There are only two kinds of "stiff" functions, flat and fixed,In addition to the two states of the fixed slope and plane,Why do not third, fourth and other desktop status for children to choose?Really sad, ridiculous, really flicker, dead people did not discuss.
