EXERCISE 91 

 HOW DO EARS OF CORN DIFFER IN THE NUMBER OF GRAINS THEY HAVE? 



Materials. A supply of ears of corn, so that each pupil may have one ear. 



Directions. Each pupil should calculate the number of grains on one ear. In case grains have 

 been lost, determine how many were lost and add this number to the number counted. Write the 

 total upon the board, and also copy in your notebook the totals of all the other pupils. Underline 

 the largest and smallest numbers and leave all the numbers for further use. 



Additional problems. Do most of the ears used in the calculations come nearest to the smallest number, 

 to the largest number, or midway between ? 



If you were selecting one ear for planting from all those used in the calculations, which one would 

 you select ? What qualities lead you to make your selection ? 



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