Notes of Lessons: Arithmetic, Class Ia

Notes of Lessons: Arithmetic, Class Ia

[We have thought that it might be of use to our readers (in their own families) to publish from month to month during the current year, Notes of Lessons prepared by students of the House of Education for the pupils of the Practising School. We should like to say, however, that such a Lesson is never given as a tour de force, but is always an illustration or an expansion of some part of the children’s regular studies (in the Parents’ Review School), some passage in one or other of their school books.—Ed.]

Class IaTime: 15 minutes

By D. M. Oliver
The Parents’ Review, 1906, p. 500


I. To introduce Harvey to a new number (12).

II. To strengthen his reasoning power.

III. To encourage accuracy.

IV. To increase his power of attention.


Step I.—Let Harvey work a few sums on number eleven. Ex. 10 + 1, 9 + 2, 8 + 3, 11 – 1, 11 – 3, etc.

Step II.—Let him count up to 12 and then count out 12 counters.

Step III.—Tell him to draw a square and divide it in half, calling one half the “ten’s house” and the other, the “unit’s house.”

From this illustration he will see that we can read 12, as one ten and two units, or twelve units

Step IV.—Show Harvey a shilling and ask him how many pennies it is worth.

Step V.—Give him 12 pennies and let him make groups with them as 6 + 6, 8 + 4, 5 + 7.

Step VI.—Let him work the following sums on the blackboard, counting with his pennies where necessary.

(a) 6 + 6, 11 + 1, 10 + 2, 9 + 3, etc.

(b) Divide 12 pennies among four little boys (among 6, 3, 2, 12).

(c) Four little boys had 3d. each, how much altogether?

(d) A boy had 12 pennies and he gave away 10, how many had he left?