THIRD GRADE FALL WORK 



127 



c 



By putting the bulb 

 into the mouth, 

 " blood" heat may 

 be determined. Ex- 

 periment with it 

 until the pupils are 

 satisfied that it is 

 uniform and reliable 

 in recording tem- 

 perature. 



Application. 

 Give the story of its 

 invention, and ex- 

 plain the gradation and its meaning. Let the pupils read 

 the thermometer, and record the temperature at 9 A.M., at 

 12 M., and at 4 P.M. each day for a few weeks. A graphic 

 record of these observations may be kept on the blackboard. 



TEMPERATURE RECORD 



LESSON III 

 CHANGE DUE TO TEMPERATURE 



How does a considerable rise in temperature affect us? 

 How do we feel when it falls many degrees? What is the 

 proper temperature for the schoolroom? A change of only 

 a few degrees either way makes us uncomfortable. What 

 is the difference in temperature between morning and noon ? 

 between day and night? Explain this difference. Find 

 from the Weather Bureau maps, the maximum and mini- 

 mum temperature for several days in succession, and com- 

 pare with the observations of the pupils. 



How does temperature affect the activities in the home? 



