Page 22 - 01-Yr6_Front cover_ccp.indd
P. 22
See Pupil's Book page 16
Triangular Numbers
"Li.
.A. . . . . J
0 . . . . .
1 3 6 10
.
7th. st~ 9th
1 Finish this table of triangular numbers :
1st 2nd 3rd 4th 5th 6th 7th 8th 9th
1 3 6
Inside each circle join every point to every other point.
0 lines 1 line 3 lines
2 Finish this table:
Points 1st 2nd 3rd 4th 5th 6th 7th 8th 9th
Lines 0 1 3
What do you notice?
20
