FIRST GRADE FALL WORK 41 



long hand to the minute past the hour. The teacher may 

 illustrate this with the apparatus already described. 



Why do we need to know the exact time? Develop as 

 many needs as the pupils can think of, and give them ample 

 practice in telling the time as indicated by the teacher with 

 the aid of the dial and hands. Relate stories illustrating 

 the need of being punctual and hence of having a correct 

 timepiece. 



LESSON IX 

 HEAT RELATIONS TO PLANTS 



In what season do plants make little or no growth ? Why ? 

 When do they begin to grow? Why? When do they cease 

 to grow? Why? What influence does the sun have, then, 

 upon plant growth? 



Recall the awakening of plant life in the spring. Note 

 the growth of twigs and stems since then. Discuss the his- 

 tory of the season's growth, with a view to arousing the ob- 

 servation of thl? class as to what plants do as the weather 

 becomes colder. 



What plants are first injured by the frost? What trees 

 shed their leaves when it gets cold? Mention plants that 

 die as soon as cold weather comes. Do any continue to 

 grow during the winter? 



Compare the vegetation and the temperature of high moun- 

 tains, which the pupils may have seen and experienced, 

 with those of the valley where they may be living. Some 

 pictures and stories of plant growth in hot and cold countries 

 will now be interesting and full of meaning. Visit a hot- 

 house, or study some window plants, with a view to impress- 

 ing the pupils with the effects and value of heat. 



