The columns of (e) may contain from three to nine figures. The teacher must not lengthen them at any time beyond the ability of the pupils.
(f) 1 1 1 1 1 1 1 1 1
2 1 3 9 4 5 6 8 7
_ _ _ _ _ _ _ _ _
The upper figure is the same in each: the lower figures are different and are arranged miscellaneously. In the advancement, increase the upper row a unit at a time, as far as 11.
8. Teach the use of the signs ×, -, and =, and let the pupils have slate work similar to the following:—
8 × 5 = .
9 - 6 = .
&c.
12 - = 4.
12 - = 8.
&c.
+ 6 = 9.
+ 3 = 9.
&c.
9. Practice counting objects as far as 100, after which drill frequently in writing and reading the numbers, from the black-board, as far as 100.
10. Use exercises similar to the following:—
(a) 4 4 4 4
9 19 29 39 &c.
_ __ __ __
(b) 7 7 7 7
8 68 18 88 &c.
_ __ __ __
Let every possible combination be learned so well that the result can be given instantly.
11. For variety, along with the preceding, there may be used exercises similar to the following:—