CHAPTER III 

 NATURAL RESOURCES OF HOME ENVIRONMENT 



Problems. i . What things about us do we get directly 

 from nature? 



2. What is air, and how does it satisfy a human need? 



3. How are we dependent upon the sun? 



4. Why are water and food of such importance? 



Experiments. i. To show the reality of the air. 



2. To prepare and observe the properties of the principal gases in the 

 air. 



3. To show what part of the air is oxygen. 



Project I. To MAKE A HOME LABORATORY. 



1. A suitable space and table. 



2. What source of heat? 



3. How arrange to collect gases? 



4. What equipment needed to start ? 



5. Cost? 



Project II. To DISCOVER AND REMEDY ANY HARMFUL EFFECTS OF 



AIR ABOUT THE HOME PREMISES. 



1 . Look for : 



a. Decaying timbers, boards, and trees. 



b. Rusting iron, hinges, fences, screens, tools, and stovepipe. 



c. Tarnishing metal as copper and silver. 



d. Any other changes observed due to air. 



2. To find out the proper way to prevent and to correct the harm. 



3. Apply the remedy. 



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