2 6 30 philadelphia, 1756 (science)

... ƯCLN ( 12, 30) 12 = 22 .3 30 = 2. 3.5 ƯCLN ( 12, 30) = 22 = 12 ?2 Tìm ƯCLN(8, 12, 15) = 23 12 = 22 .3 15 = ƯCLN(8, 2, 15) = 22 = 12 Tìm ƯCLN (24 , 16, 8) 24 = 23 16 = 24 = 23 ƯCLN (24 , 16, 8) = 23 = 24 IV ... thừa số nguyên tố Phân tích 12, 30 rq thừa số nguyên tố ƯCLN( 12, 30) = ? ?2 Tìm ƯCLN ƯCLN(8, 12, 15) = ? 36 = 22 32 84 = 22 .3 168 = 23 .3.7 Chọn thừa số chung: Số mũ nhỏ 2, số mũ nhỏ đó: ƯCLN( 36, ... chung 12 GV nêu ví dụ tìm ƯC( 12, 30) 30 ƯC( 12; 30) Có giá trị lớn Ư( 12) = {1; 2; 3; 4; 6; 12} Vậy ƯCLN 12 30 Ư(30) = {1; 2; 3; 5; 6; 10; 15; 30} GV giới thiệu ƯCLN kí hiệu Vậy ƯC( 12, 30) = {1; 2; ...

... New lesson (35’) Teacher and Ss’ activities Contents T Unit 3: At home Lesson 1: A 1-2 (p.3 0-3 1) I Presentation + Pre- teach: Vocabulary Vocabulary - using the pictures on P.31 for eliciting - a ... :Slap the board - a table: bàn làm việc + Presentation text A2/P.31 - a clock: đồng hồ - Elicit from the Ss to give the model - a stereo: đài sentences - a telephone: điện thoại - Ss read the model ... a lamp: đèn new Vocab - a bookshelf: giá sách - T teaches Ss to read Vocab - a chair : ghế tựa - Ss read the Vocab chorally then - a couch : ghế sa lông dài individually - an armchair: ghế bành...

... correction - Further practice : Mapped dialogue Mai Mary What ? What ? - HOMEWORK : Make sentences of your own with : It 's a / an They ' re Sep .15 th2004 10 /20 /2 010 Date : Week :5 UNIT : AT HOME ... PREIOD 14 LESSON A3 - P . 32 - 34  10 /20 /2 010 AIM : By the end of the lesson, Ps will be able to talk about family members, using Possessive Pronouns + Who ‘s this/ that ?  VISUAL aids : N/C 1. Warmer: ... family - Ss write their family member’s name + age under each drawing - Ss practise : S1 : Who ‘s this ? S2 : It ‘s my S1 : What ‘s (his) name ? S2 : (His) name ‘s S1 : How old is (s) he ? S2 :...