Review 1) 3/4 has ( ) 1/4, 1/4 is the unit fraction. three Unit fractions and not unit fractions 1) 3/4 has ( ) 1/4, 1/4 is the unit fraction. three 2) 1/7 is ( ) of 5/7. There are ( )1/7 in 5/7. unit fraction five

Compare fractions WHAT? WHY?

Compare Which one is bigger?

1 — 2 1 — 4 <

1 — 2 1 — 4 >

1 — 4 = 1 — 2

Different sizes of the whole Why? Different sizes of the whole 1 — 2 1 — 4 > 1 — 2 1 — 4 < 1 — 4 = 1 — 2

What is the fraction of the colored parts in the figures below? 1 4 1 5 1 2 1 3 the same whole 1 6 1 7 1 8 1 9 1 2 3 4 5 6 7 8 9

Q1: Which is the longest? Which is the shortest? The Same Whole 1 meter ( ) meter ( ) meter 1 6 — ( ) meter ( ) meter Q1: Which is the longest? Which is the shortest? Q2:Can you compare these unit fractions with “>”?

more equal parts you divide, Conclusion For the same whole, the more equal parts you divide, the less each part you get. 　　　　 1 _ 1 1　　　　　　　　　　 — 4 —— —— 8 8 4 (less) (more) Denominator Numerator

In unit fractions, if the denomina tor is bigger, then the value of Conclusion:Unit fractions In unit fractions, if the denomina tor is bigger, then the value of the unit fraction is smaller. 　 1 _ 1 1　　　　　　　　　　 — 4 —— —— 8 8 4

Use unit fractions to tell me Which apple is near to the snail?

3 has ( ) 7 has ( ) >

Reason to convince Mr Jin 1) and 2) and

Compare the value of the fraction with Conclusion: fractions with same denominator Compare the value of the fraction with the same denominator. The fraction with the greater numerator is larger.

Fill the blank with”>”、”<”、”=” 7 4 5 4 ＜ ＜ 10 9 10 9 2 9 6 8 ＜ 1 ( ) ＜ 16 16 8 8 7 3 3 2 ＜ ＜ 8 8 15 15 3 4 =1 = 3 4

＜ Challenge 4 6 and which is biger? （ means a positive integer， ≠0） 4

Challenge A Tom B John C They left same D I don't know B < Tom and John drink same capacity of juice ,Tom drink 4/5 of juice ,John drink 2/3 of juice ,who left more juice? ( ) B A Tom B John C They left same D I don't know <

what did you learn in this lesson