The Meaning of Science 9 



conclusion that milk is heavier than water. She has observed 

 how much each liquid weighs, has compared one weight with the 

 other, and has concluded which liquid is heavier. 



The steps involved in an experiment are: (a) stating the 

 problem; (b) securing the materials necessary; (c) use of the 

 materials to produce a natural result; (d) observation and com- 

 parison of results; (e) conclusion drawn; (f) when possible, the 

 practical application of the conclusion to the solution of new prob- 

 lems. Of these, observation, comparison and conclusion are the 

 essential parts. Observation means taking careful notice of facts 

 or conditions. Comparison means a study of the facts observed 

 to discover how they compare with each other and with other 

 known facts. Conclusion is what is believed as a result of this 

 observation and comparison. 



A knowledge of how to experiment will help us in our study 

 of General Science. Many things about us are so familiar we do 

 not appreciate their great importance until we experiment with 

 them and begin to understand the scientific laws back of them. 



Labels. Whenever possible, it is helpful to make a simple 

 drawing or sketch to accompany and explain experiments and 

 demonstrations. Such a drawing should have a clear, definite 

 title which explains just what it represents. Usually it is ad- 

 visable to label all important parts. That is, the name of the part 

 should be lettered on the drawing, or else the lettering should be 

 placed in the margin and a line drawn to connect it with the part 

 to which it refers. 



All samples of material should also be labeled. That is, the 

 material itself or its container should have attached a simple paper 

 label stating exactly what the material is. Labeling of this char- 

 acter is helpful in using or classifying samples later, and is of 

 importance in avoiding mistakes. 



SUMMARY 



Until Science made it possible for man to use the materials 

 and forces about him, life was a bitter struggle for existence. 



A knowledge of the facts and laws of Science helps us to im- 

 prove life conditions. The extent of the field that Science covers 



