The Rules of Changing Cardinal Numbers into Ordinal Numbers An oral game of brain storm. Say them clearly and quickly. 1 one 6 six 11 eleven 20 twenty 2 two 7 seven 12 twelve 30 thirty 3 three 8 eight 13 thirteen 41 forty-one 4 four 9 nine 15 fifteen 99 ninety-nine 5 five 10 ten 19 nineteen 100 one hundred Lets say out the following ordinal numbers together. first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth thirteenth fifteenth nineteenth twentieth thirtieth forty-first ninety-ninth one hundredth Please compare the ordinal numbers with the cardinal numbers. Lets find out the rules. onefirst sixsixth eleveneleventh twentytwentieth twosecond sevenseventh twelvetwelfth thirtythirtieth threethird eighteighth thirteenthirteenth forty-oneforty-first fourfourth nineninth fifteenfifteenth ninety-nineninety-ninth fivefifth tententh nineteennineteenth one hundredone hundredth Ordinal numbersCardinal numbers Lets sum up the rules of changing and creat a chant. A chant th. first, second and third. t, e, ve f , th ty ty tie, th Lets do exercises! My grandpa is the first. His birthday is on My grandma is the... Her birthday is on My mother is the third. Her birthday is on My father is the... His birthday is on Im the fifth. My birthday is on . Lets practice speaking Our Birthday Train .Can you find the mistakes? Please find them out and correct them. ( ) ( ) 1. Whats the date today? Its August twelve. _____ A B C ( ) 2. My grandma is seventieth years old. _____ A B C ( ) 3. Today is my nineth birthday. _____ A B C ( ) 4. Where do you live? I live on the twenty-two floor. _____ A B C ( ) 5. When do you go to bed? I go to bed at nine forty- fifth. _____ A B C