USEFUL INFORMATION FOR TEACHERS


 Pictures of flats used for teaching should be acceptably
mounted on paper that tones in with the neutral value in the
pictures. Soft shades of tan, brown, and gray are most often
satisfactory.
 In the evaluation of pictures the group will consider:
 1. That the picture be appropriate to the maturity of
 the children and to the unit being studied
 2. That it have just one center of interest
 3. That it be true in color
 4. That it be true size or have some familiar object by
 which the child can estimate size
 For the lower grades pictures are preferably selected with
larger objects and fewer details. It is also important to know
how to place the mounted pictures on the board considering cor-
rect space, balance, and proportion
 Hand-made Slide. Slide projections are so widely used in
teaching that it is not necessary to give example of classroom
applications. Hand-made slides consist of several types: etched
glass, clear glass, cellophane, and special transparencies. Hand-
made slides have advantages over other slides and movies in
that the children can create their own material; they are inex-
pensive; they can be washed off and used again; they can sup-
plement other slides with local applications; and they can be
ready for use whenever needed. The production of hand-made
slides is in itself a valuable learning activity, not only for the
subject-matter of the slide but also for the subsidiary skills.
 If children have never had any experience in making
slides, results will be better if the class as a whole is given in-
struction in how to make the slides before beginning to work.
Instruction on such problems as the following will save time and
materials:
 1. Beginners will probably want to make their drawings
 on a piece of paper the size of the slide and then
 transfer it to the etched or frosted side of the glass
 slide.
 2. Draw the picture near the center of the slide so that
 the frame will not cover any part of the drawing.
 3. Color the slide with special colored pencils or ink.
 4. Try the slide in the lantern. Some will probably be in-
 distinct. They may need to be colored more heavily
 and outlined more clearly.
 The teacher and class may wish to keep good and unusual
slides to be shown to other groups of children or even to ex-
change with other schools.