trafton] OUTLINE OF NATURE-STUDY 139 



Problems — 



How do spiders webs differ from each other? 

 Are spiders harmful or helpful? 



In what ways is each of these water insects fitted for living in water? 

 What harm is done by the housefly? 

 What can be done to get rid of the fly? 



What habits of the crayfish may be observed from a study of a cray- 

 fish kept in the schoolroom? 

 How do the activities of birds now differ from their activities last 



spring? 

 How may we help the winter birds? 



IV. Some Plant Foes. 



Poisonous plants, such as posion ivy, Jimson weed, pokeweed, poison- 

 ous mushrooms, Identification, nature of injury, remedies. 



Problems — 



How may we know these poisonous plants when we see them? 



What harm does each plant do? 



What is to be done in case of poisoning with any of these plants? 



V. Aquarium Studies. 



Scavengers — tadpole and snail. 

 Problem — 



Of what use are tadpoles and snails in the aquarium? 



VI. Fall Sports. 



1. Giant stride; other illustrations of centrifugal force such as cream 



separator, clothes drier, flywheel, sling. 



2. Teeter; other applications of the lever such as crowbar, hammer, 



pump handle, pantagraph, scales for weighing. 



3. Value of exercise to the body; muscles of the body. 

 Problems — 



What principles that are illustrated in the giant stride are applied 



elsewhere? 

 How do the various applications of the lever differ from that found 



in the teeter? 

 In what way is the exercise on these pieces of apparatus good for the 



muscles of the body? 



Seasonal Order of Topics 



September October November 



Wild flowers. Ferns. Water insects. 



Tender annuals. Spiders. Crayfish. 



Start calendar Bulbs — outdoors. Vegetables. 



of leaf coloring Compare bird life with Feeding birds. 



House plants. spring. Bulbs — indoors. 



Housefly. Trees. Tadpole and snail. 



Stride and teeter. 



