viii SUGGESTIONS TO TEACHERS 



pcrience and laboratory work, and from them to draw out the 

 principles of science involved. 



To illustrate: In considering the properties of matter in 

 oak wood, present first the uses of oak wood; it is used, for 

 instance, in the manufacture of furniture and refrigerator 

 cases. To be used for these purposes, it must be capable of 

 taking a high polish and of undergoing long usage it must 

 be a hard wood. As Walter Dill Scott says in Influencing 

 Men in Business": "Water is not adequately described by 

 stating that it is composed of two parts of hydrogen to ono 

 of oxygen. The important thing about water is the uses 

 which may be made of it." 



This method will be found to be far more effective in teach- 

 ing vocational school pupils than that of presenting the 

 principle first arid the illustrative practice afterwards 



