1 00:00:00,000 --> 00:00:04,000 In this unit, we are going to see about materials. 2 00:00:04,000 --> 00:00:08,000 And the things are made of materials. 3 00:00:08,000 --> 00:00:10,000 What is this made of? 4 00:00:12,000 --> 00:00:14,000 Wood! Good! 5 00:00:14,000 --> 00:00:16,000 Wood, okay. 6 00:00:16,000 --> 00:00:18,000 What is wood? 7 00:00:20,000 --> 00:00:22,000 Very good. 8 00:00:22,000 --> 00:00:24,000 What is the window made of? 9 00:00:24,000 --> 00:00:26,000 Glass! 10 00:00:26,000 --> 00:00:28,000 Glass! 11 00:00:28,000 --> 00:00:30,000 What is glass? 12 00:00:30,000 --> 00:00:32,000 Glass. 13 00:00:32,000 --> 00:00:34,000 Okay. 14 00:00:34,000 --> 00:00:36,000 What is this made of? 15 00:00:36,000 --> 00:00:38,000 Metal. 16 00:00:38,000 --> 00:00:40,000 Metal. 17 00:00:40,000 --> 00:00:42,000 Metal. 18 00:00:42,000 --> 00:00:44,000 What is 19 00:00:44,000 --> 00:00:46,000 this made of? 20 00:00:46,000 --> 00:00:48,000 Cotton. 21 00:00:48,000 --> 00:00:50,000 Cotton. 22 00:00:50,000 --> 00:00:52,000 What is cotton? 23 00:00:52,000 --> 00:00:56,659 Cotton. 24 00:00:56,659 --> 00:00:58,659 Very good. 25 00:00:58,659 --> 00:01:03,659 This is wool. And do you remember what is leather? 26 00:01:06,659 --> 00:01:14,659 Quero. Leather, cuero. We have the belts, some jackets. Some belts are made of leather. 27 00:01:18,659 --> 00:01:25,659 Plastic. This is plastic. This is plastic. 28 00:01:25,659 --> 00:01:30,659 Okay, but do you know clay? What is clay? 29 00:01:35,659 --> 00:01:36,659 Ilias? 30 00:01:37,659 --> 00:01:38,659 Not exactly. 31 00:01:39,659 --> 00:01:45,659 We can make jars, we can make buildings with the clay. 32 00:01:45,659 --> 00:01:59,659 So, we have clay, wood, glass, metal, cotton, wood, metal, plastic. 33 00:01:59,659 --> 00:02:03,659 Okay, most of them are from the natural. 34 00:02:03,659 --> 00:02:07,659 Okay? They are natural. 35 00:02:07,659 --> 00:02:09,659 More of them. 36 00:02:09,659 --> 00:02:11,659 Some of them. 37 00:02:11,659 --> 00:02:26,659 One of them, for example, the clay is from the nature, the wood is from the nature, the glass is from the nature because we make the glass using some kind of minerals like sand. 38 00:02:31,659 --> 00:02:37,659 We use sand to make glass. And we have metal, the metal is a type of rock. 39 00:02:41,659 --> 00:02:44,860 Yes, but the metal is a kind of rock, okay? 40 00:02:44,939 --> 00:02:49,580 There are some rocks that are metal, there are other rocks that are metal, okay? 41 00:02:50,000 --> 00:02:54,340 The cotton is from a plant, okay? 42 00:02:54,419 --> 00:02:56,400 There is a plant that makes cotton. 43 00:02:56,400 --> 00:03:04,099 The cotton is a plant, the wool is from the ships, okay? 44 00:03:06,020 --> 00:03:06,979 That's it. 45 00:03:07,240 --> 00:03:09,300 It's a plant, okay? 46 00:03:09,300 --> 00:03:12,680 And the wool is from the fur of the silk. 47 00:03:13,460 --> 00:03:16,419 And the leather is from the skin of the animals. 48 00:03:17,000 --> 00:03:18,960 But what happened with the plastic? 49 00:03:20,400 --> 00:03:22,400 The plastic is natural. 50 00:03:22,680 --> 00:03:24,419 Can we find plastic in the nature? 51 00:03:24,620 --> 00:03:25,199 No. 52 00:03:27,060 --> 00:03:30,199 The plastic is man-made. 53 00:03:34,340 --> 00:03:37,419 We invented the plastic, okay? 54 00:03:37,419 --> 00:03:40,740 Many years ago, there wasn't plastic. 55 00:03:43,860 --> 00:03:50,360 We will learn that later, okay? 56 00:03:51,599 --> 00:03:55,439 But, for example, a hundred years ago, there wasn't plastic. 57 00:03:55,819 --> 00:03:57,719 The plastic is something new, okay? 58 00:03:58,219 --> 00:04:05,740 Before, the box was filled with the bodies of plastic was glass, okay?