Interesting stickers 有趣的粘贴画 Think about it 想一想 So beautiful! These designs are all symmetrical. 真漂亮！这些图案都是对称的。 They are all made of leaves. 它们都是用树叶做成的。 Many beautiful patterns can be created using the knowledge of symmetry. 利用对称的知识能够创造出许多美丽的图案。 Unit four Green ecological park -- solving problems 绿色生态园——解决问题 Lesson One 第一课 3 colors of the same number of flowers, each placed in 5 rows, each row of 8 POTS 3种颜色的花同样多，各摆了5行，每行8盆 Each pergola has four layers, and the two pergola hold a total of 96 POTS of flowers. 每个花架摆四层，2个花架一共摆了96盆花。 What questions can you ask? 你能提出什么问题？ 1.3 How many POTS of flowers of different colors? 1.3种颜色的花一共摆了多少盆？ Let's start with a little wiggle. 我们先用学具摆一摆。 Eight times five is forty （basin） 8×5=40（盆） Forty times three is one hundred and twenty POTS 40×3=120（盆） 3. How many potted flowers are placed on an average shelf per floor? 1. 平均每个花架每层摆了多少盆花？ Ninety-six divided by two equals forty-eight POTS 96÷2=48（盆） Forty-eight divided by four equals twelve POTS 48÷4=12（盆） Lesson Two 第二课 I bought 3 kilos of pumpkins for 18 yuan. 我花18元买了3千克南瓜。 I want to buy 9 kilos. 我想买9千克。 There are 12 rows of 60 tomato plants in the nursery. 苗圃里有12行番茄苗，每行有60棵。 Transplant them all into the growing area, planting nine plants in each row. 把它们全部移栽到种植区，每行栽9棵。 What questions can you ask? 你能提出什么问题？ 1. How much does it cost to buy 9 kilos of pumpkins? 1. 买9千克南瓜需要多少钱？ Eighteen divided by three equals six yuan 18÷3=6（元） Six times nine is fifty-four dollars 6×9=54（元） 2. Transplant the tomato plants into the planting area. How many rows can be planted? 1. 把番茄苗移栽到种植区里，能栽多少行？ Sixty times twelve equals seven hundred and twenty heads 60×12=720（棵） Seven hundred twenty divided by nine equals eighty rows 720÷9=80（行） |
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