10. Teach the corresponding subtractions.
11. Add 7, 6, and 5 to each number up to 10.
12. Teach the corresponding subtractions.
13. Review and give combinations not taught above.
Objects should be grouped by tens and units, in showing numbers above ten. Ten should be the basis of all our reckoning, and if the children know ten, and the numbers which precede it, they can soon be taught the rest. Little children should not have “sums” given them to do on their slates, for “sums” are made up of abstract figures, and children of tender years cannot grasp the abstract.
Number to One Hundred.—When the children are conversant with numbers up to ten, it is very easy to teach them one hundred.
PRIMARY IDEAS OF DIVISION
In teaching the two ideas of division—division by measurement (division proper) and the fractional idea of division (partition)—proceed very slowly and see that each step is thoroughly understood.
The following suggestions may be useful:—