Thesis (Ed.M.)--Boston University / Purpose of the workbook: It is the purpose of this workbook to present a series of special activity gtion sheets to be used a.s teaching devices and resource material in basic shop mechanics. These activity guides or instruction sheets have been devised for the use of pupil and teacher in classes for the mentally retarded ( cominonly called special classes). Scone of the workbook material: The activity guides herein presented have been developed and graded for 14 to 16 year old boys to whom the special class is a terminal room. The sheets are to be used in the industrial arts program, either in the section of the special class room used. for this purpose and taught by the special class teacher, or in the regular shop classes in unit shops and general industrial arts shops.

This study was conducted to identify certain effective practices currently being utilized in teaching multiple activity industrial arts classes. The study was concerned with those practices being used in middle school, junior high school, and intermediate school general shop classes where multiple activities were being taught.

This study was made to find the effects of noise on the human body, to measure sound levels that exist in school power laboratories, and to design and evaluate the effectiveness of two noise control devices. An accurately calibrated testing device was used to measure sound levels in an attempt to determine if excessive noise exists in school power laboratories and to find the extent to which such noise can be reduced by shielding or enclosing the engine test area. It was found that noise has undesirable physical and psychological effects on the human organism. Sixty-two and one-half per cent of the engines tested registered sound levels above 90 dBA; even so, simple, inexpensive noise control devices do control the noise levels generated in the school power laboratories.