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58
Vol. 16, No. 2
VISUAL AND OTHER AIDS TO INSTRUCTION
H. E. Dance, a.m. i.e. e. m.b.k.s.*
Summary of a paper read to a joint meeting of the 8.K.S. with the Institution of Engineering Inspection, at the Royal Society of Arts on 1st December, 1949.
EDUCATION involved the unification of ideas and it was in conveying these ideas in the best way possible that visual aids played their part. A general idea of a subject could often be conveyed more easily and quickly by pictorial methods than by verbal means, but greater preparation was required.
Simple Aids
Economy in all forms had to be considered in using visual aids, and accounted for the greater use of simple techniques giving less highly finished results more quickly than expensive equipment requiring a relatively long period of time to put it into operation.
But even a visual aid as simple as a chart presented a problem of storage space and easy availability. With Photopake drawings on glass any slide could quickly be made for projection, by the teacher or pupils. The most useful visual aid for the teacher was one that could be worked with little bother
from his own desk.
Film-strip was cheap to make. It did not have the convenience of a book library but occupied less space. While kinematograph film evoked a great deal of interest in a class it had to be decided by the teacher whether the advantages were worth the extra cost and time involved in its use.
The author referred to the use of document filmstrips as a cheap and rapid means for circulating information. The page given here, by way of example, will serve to illustrate this use of filmstrip and also to show how in a technical college the projected picture and blackboard work together.
SCSSMS OLASiSSOOM
RIKJBY COLLEGE UP TECHNOLOGY Aip> AST
la a lecture theatre a screen is placed above a central blackboard, sloping forward to avoid keystone distortion. It stands some distance in front of the blackboard so that a tabular lamp may be fitted below it to Illuminate the board, leaving the screen dark. The photograph is an uncontrolled single exposure. ,
The technical information i3 as follows :
Blackboard 12ft x 3ft Laiap 5ft 80 watt gas discharge Brightneas levels, measured in ft. lasnberts paper, with the room otherwise in darkness,
, on matt were:
The :*atural fiaylt^ht, ■■•. rider a sky covered
by. thin cloud, with no direct sunshine, ;ave:
Horizontal test surface in the 03
Lowest reading on board 5«3
* reading on board 16.0 "
Specimen frame of Document Fiim Strip, used by the Ministry of Education.
A full report of paper will appear in
this the Spring, 1950, issue of the Journal of the Institution of Engineering Inspection, to be published in March. * Ministry of Education.