x FOREWORD TO THE TEACHER 



in daily life to the end that a transfer of training may take 

 place. 



The psychology of the unit with its social aspect is a 

 force which makes for pupil interest and learning. The 

 Morrison techniques, with modifications which have been 

 found desirable, are used throughout the series. Empha- 

 sis has been placed upon learning devices, and a conscious 

 attempt is made to show the pupil reasons for doing 

 because of the desirable outcomes in transfer of training. 



Cuts and diagrams are presented as learning devices. 

 The Chinese saying, " A picture is worth 10,000 words," 

 showed a deep pedagogical insight. In this text many 

 pictures are used and thought questions are so worded 

 that the child will use the text as well as the picture 

 in trying to answer the questions in the legends. While 

 the value of the child's recognition of the big ideas and 

 generalizations in science is seen, the greater impor- 

 tance of properly arriving at these generalizations has 

 been stressed in this series. Numerous devices are used 

 to this end : The Review Summary outline, with its 

 suggestions to the pupil for the proper method of pre- 

 paring for the recitation; the practice in problem solv- 

 ing by means of the presentation of the textual material 

 in problematic form ; the various types of self-testing 

 exercises and the many thought questions at the ends of 

 the units are examples of such aids. In the so-called 

 " Story Tests" more factual material than appears in the 

 text is often given, to the end that teacher and pupil 

 discussion will be stimulated and reading encouraged. 

 In addition constant use is made of the motivation which 

 comes through desirable activities such as those obtained 

 by science clubs and excursions. Leisure-time activities 

 are also used as a means of stressing interest in learning 

 science. 



