(_a_) Tough sticks and branches that are so shaped that
they can be fastened firmly to stone implements.
(_b_) Tough and flexible branches for making baskets.
(_c_) Tough grasses for making mats, baskets, and
sandals.
(_d_) Birch bark for making baskets, picture frames,
etc.
(_e_) Natural gum and pitch.
(_f_) Wood that is suitable for making a fire drill.
(_g_) Tinder and punk for making fire.
(_h_) A bed of gravel where good stones can be found.
(_i_) Animals and plants that may be of interest to the
child.
Field lessons should be supplemented by informal trips by different
members of the class. A view from the window of a high building may
serve to give the child the relative location of the different parts
of a river valley. Such a view is of special value after a trip, for it
gives a unified view of the whole.
In places where access to natural materials is exceedingly difficult,
it is well to secure the advantages that come from a system of
exchange. The American Bureau of Geography offers opportunities for
securing all kinds of raw materials as well as specimens showing “the
changes incident to their conversion into finished products.” Teachers
who wish to avail themselves of the privileges of this bureau can
secure a circular containing full information regarding it by sending
a letter with an enclosed stamp to the director of the bureau, Winona,
Minnesota.