On Si%e and Comparison. 33 



bring out much valuable information regarding how nature 

 tries to repair any injury; how new plants may be formed 

 from old ones, etc. 



In all such work a diary should be kept to record obser- 

 vations. 



ON SIZE AND COMPARISON. MEASUREMENTS. 



Many teachers give their pupils some drill on form 

 and size. Some teach measurements. One of the earliest 

 faculties to develop is comparison, and the following lesson 

 is designed to furnish drill in comparison and measure- 

 ments. Each child has a ruler. 



THE LESSON. 



Who can tell me what kind of tree this is ? Yes, it is an 

 oak-tree. Did you ever notice how large some oak-leaves 

 are ? Let us see who can find the largest oak-leaf. Here 

 is a very small one. See who can find the smallest also. 



Get the biggest and the littlest you can find, and then 

 we will all sit down here and measure them. 



Mary, how long is your leaf ? Who has a longer one ? 

 Measure from the top to the end of the stem of the leaf. 

 Does the stem of the leaf belong to it ? Yes, because it 

 comes off with the leaf. 



[When you have had the children measure their leaves, 

 have them put the figures on slate or paper. Be sure the 

 brighter ones help the duller, and so facilitate matters.] 



Now let us see who has widest place. Measure farther 

 down, Willie ? You are too far down, Jessie. Hold the 

 leaf flat, Mary. 



Now you may measure the smallest leaves. When this 

 has been done, the results of both observations may be 

 written upon the board. A sort of table may be made, as 

 follows : 



