Math  201920
2.3  Ordinal positions
The student will
a) count and identify the ordinal positions first through twentieth, using an ordered set of objects; and
b) write the ordinal numbers 1^{st} through 20^{th}.
Adopted: 2016
BIG IDEAS
Knowing ordinal numbers is essential to spatial (lining up), temporal (second hour of the day) and personal (I came first)
So that I can use ordinal numbers everyday when we do things like lining up and waiting in line, finishing a race, or figuring out what grade someone is in
UNDERSTANDING THE STANDARD

ESSENTIALS
The student will use problem solving, mathematical communication, mathematical reasoning, connections, and representations to
 Count an ordered set of objects, using the ordinal number words first through twentieth. (a)
 Identify the ordinal positions first through twentieth, using an ordered set of objects presented in lines or rows from
 left to right;
 right to left;
 top to bottom; and
 bottom to top. (a)
 Write 1st, 2nd, 3rd, through 20th in numerals. (b)
KEY VOCABULARY
Updated: Aug 22, 2018