Lesson-4-Ordinal-Numbers.pptx powerpoint

ppt

1. Second Quarter

2. Objectives: Identifies, reads and writes Ordinal number: 1 st , 2 nd , 3 rd , up to 10 th object in a given set from a given point of reference.

3. Compare the following numbers use the >, <, and = The symbol “ > ” means greater than . The symbol “ < ” means less than . The symbol “ = ” means equal to .

4. < > = less than greater than equal 37 39 __ < less than 47 46 __ > greater than

5. < > = less than greater than equal 66 68 __ < less than 58 55 __ > greater than

6. Lesson 1: Ordinal Numbers

7. Let’s start our lesson. Identifying Ordinal Numbers . - tells the position of a person or object. Normally they are indicated by “th” or sometimes by “nd” or “st”

8. Let Us Remember Ordinal numbers tell the position of a person or an object in a row or a line. Ordinal numbers may be written in symbols or in words. When telling ordinal positions, you may start from the left or from the right.

9. Some ordinals are: 1 st - Fir st 2 nd - Seco nd 3 rd - Thi rd 4 th - Four th 5 th - Fif th 6 th - Six th 7 th - Seven th 8 th - Eig ht 9 th - Nin th 10 th - Ten th

10. Some ordinals are: 11 th - Eleven th 12 th - Twelf th 13 th - Thirteen th 14 th - Fourteen th 15 th - Fifteen th 16 th - Sixteen th 17 th - Seventeen th 18 th - Eighteen th 19 th - Nineteen th 20 th - Twentie th

11. 1 st First 2 nd Second 3 rd Third 4 th Fourth 5 th Fifth ORDINAL NUMBERS

12. John

13. 1 st 2 nd 3 rd 4 th 5 th 6 th 7 th 8 th 9 th 10 th 11 th Michael Joey Jem Joshua John Fred Maris James Myla Mica Vic Who is in the first position? Michael Who is in the fifth position? John

14. 1 st 2 nd 3 rd 4 th 5 th 6 th 7 th 8 th 9 th 10 th 11 th Michael Joey Jem Joshua J ohn Fred Maris James Myla Mica Vic Who is in the ninth position? Myla Who is in the last position? Vic

15. 1 st 2 nd 3 rd 4 th 5 th 6 th 7 th 8 th 9 th 10 th 11 th Michael Joey Jem Joshua John Fred Maris James Myla Mica Vic What is the position of James? 8 th What is the position of Joey? 2 nd

16. John

17. Practice Exercises: Please get your whiteboard and marker!

18. Write st, nd, rd, or th to make the given numbers ordinal . a. 19 th b. 1 st c . 20 th d. 14 th e . 10 th f. 2 nd

19. Ordinal Numbers . - tells the position of a person or object. Normally they are indicated by “th” or sometimes by “nd” or “st”

20. Write st, nd, rd, or th to make the given numbers ordinal. g . 11 th h. 3 rd i . 1 st j. 18 th k . 8 th L. 6 th

21. Mathematics Activity : Get Ready page 113-114 (1-5) Work Alone page 115-116 (22-3 7 ) Work Together page 115 (16-21)