WEBVTT 00:04.040 --> 00:06.180 Welcome to the Why Lab! 00:06.190 --> 00:10.300 We are making a paper windmill, but something is missing from the middle. 00:10.310 --> 00:11.430 Let us take a look! 00:12.070 --> 00:16.125 I drew blue dots and yellow stripes. 00:16.135 --> 00:17.930 It looks so pretty! 00:17.940 --> 00:21.145 But the blades will not stay in place. 00:21.155 --> 00:23.105 What did we forget, Eirini? 00:24.010 --> 00:27.690 Do not worry! I brought the biggest gear in the laboratory. 00:27.700 --> 00:29.450 It is as big as my head. 00:29.460 --> 00:32.950 Such a huge helper must work! 00:34.050 --> 00:38.010 Pico, I cannot see the windmill behind that gear! 00:38.020 --> 00:39.730 Could it be too big? 00:39.740 --> 00:43.670 Or is our windmill much too small? 00:44.050 --> 00:46.160 Our windmill is fine. 00:46.170 --> 00:49.210 It needs the right little piece in its centre. 00:49.220 --> 00:52.550 I will fit it, and you can watch. 00:53.060 --> 00:54.640 My enormous gear cannot help here? 00:54.650 --> 00:56.620 I will put it aside. 00:56.630 --> 01:00.930 For now, it wins the prize for being our biggest visitor! 01:02.090 --> 01:03.880 Look at these pieces on the workbench. 01:03.890 --> 01:05.910 The big one does not fit. 01:05.920 --> 01:10.110 The little one has exactly the shape our windmill needs. 01:11.080 --> 01:12.300 That tiny little thing? 01:12.310 --> 01:14.910 I almost overlooked it! 01:14.920 --> 01:19.370 It seems I made a mistake when I chose just by thinking about size. 01:20.020 --> 01:23.980 So size does not tell us how important something is? 01:23.990 --> 01:29.350 Does our body need some nutrients in small amounts too? 01:30.000 --> 01:36.310 Yes! One is zinc, an essential nutrient found in food. 01:36.320 --> 01:40.870 Our bodies need only a little, so we call it a trace mineral. 01:41.090 --> 01:42.020 Trace mineral! 01:42.030 --> 01:44.870 A big name for a small amount. 01:44.880 --> 01:50.650 I will write it beside our discovery: a little can matter! 01:50.660 --> 01:52.640 That deserves a star! 01:53.040 --> 01:57.900 Our windmill gave us an idea, but a body is not a windmill. 01:57.910 --> 02:02.190 Let us leave these pieces and open our body book. 02:03.060 --> 02:06.230 In the picture, I see tiny cells. 02:06.240 --> 02:09.300 They look like different groups! 02:09.310 --> 02:14.350 Are these inside our bodies, doing different jobs? 02:15.020 --> 02:17.440 Yes, our bodies are made of cells. 02:17.450 --> 02:19.730 This is a simple drawing. 02:19.740 --> 02:26.430 Zinc helps many of their functions, alongside other essential nutrients. 02:27.000 --> 02:28.570 So it does not work alone! 02:28.580 --> 02:30.210 I like teams. 02:30.220 --> 02:36.490 I need Nefeli and Eirini, especially when I bring things bigger than the table. 02:37.060 --> 02:40.670 Zinc helps our bodies grow normally. 02:40.680 --> 02:43.585 It also helps our body's defences work properly 02:43.595 --> 02:46.190 and plays a part in helping our skin heal. 02:47.050 --> 02:51.260 So when our body repairs a scratch, lots of helpers work together? 02:51.270 --> 02:55.390 No single hero does every job with a magic wand! 02:56.030 --> 03:01.980 Exactly. Zinc does not give us superpowers or mean we will never get ill. 03:01.990 --> 03:07.350 Our bodies need everyday care, varied food and rest. 03:08.000 --> 03:09.820 I will put my superhero cape away! 03:09.830 --> 03:12.380 It could become a blanket at rest time. 03:12.390 --> 03:16.870 First, where do we find zinc in food? 03:17.030 --> 03:19.460 Our food cards are waiting in the kitchen. 03:19.470 --> 03:21.800 Let us spread them on the table. 03:21.810 --> 03:25.550 We can look together and ask more questions! 03:26.080 --> 03:31.750 Here are pictures of meat, an egg, yogurt, beans and wholegrain bread. 03:31.760 --> 03:36.390 These foods contain zinc, but not in the same amounts. 03:37.000 --> 03:40.840 I see foods from animals and others from plants. 03:40.850 --> 03:47.390 So zinc is not found in just one food with a special name! 03:48.040 --> 03:50.750 I would call beans little spaceships. 03:50.760 --> 03:52.460 Look at their shape! 03:52.470 --> 03:57.090 But I will write beans in my notebook, to avoid confusing our cook. 03:58.030 --> 04:01.390 At home, we put beans in soup. 04:01.400 --> 04:05.000 Other families might cook them differently. 04:05.010 --> 04:08.550 We can discover new recipes and learn about their meals! 04:09.000 --> 04:14.840 Of course. Families eat different foods according to their habits and needs. 04:14.850 --> 04:19.950 We are exploring zinc sources, not giving everyone the same menu! 04:21.020 --> 04:23.010 The cards are in one group. 04:23.020 --> 04:25.000 None wears a crown! 04:25.010 --> 04:29.960 We are learning about different foods, not finding the king of food. 04:31.000 --> 04:36.540 Here is an easy plan for our garden table: one food card, over and over. 04:36.550 --> 04:39.540 Would that make our investigation much quicker? 04:40.000 --> 04:44.200 Foods provide different things. 04:44.210 --> 04:48.460 Keeping only one means losing variety. 04:48.470 --> 04:52.200 Let us keep all the cards in our group and explore them together! 04:53.060 --> 04:54.350 You are right! 04:54.360 --> 04:55.860 I will change that. 04:55.870 --> 05:03.160 But if zinc is useful, will more and more of it make our bodies work better? 05:04.000 --> 05:07.520 No, Pico. More does not mean better. 05:07.530 --> 05:09.910 We need the right amount. 05:09.920 --> 05:12.415 Too much can be harmful. 05:12.425 --> 05:15.510 We are not racing for more zinc! 05:16.100 --> 05:18.510 What if someone wonders whether they need a supplement? 05:18.520 --> 05:21.680 We cannot decide on our own, can we? 05:21.690 --> 05:25.270 That question needs a grown-up’s help. 05:26.000 --> 05:31.350 Right. Parents discuss their child’s needs with a doctor or pharmacist. 05:31.360 --> 05:35.510 Supplements are not toys. Children should never take them on their own. 05:36.000 --> 05:37.900 Second correction! 05:37.910 --> 05:42.310 Varied food, not a race for bigger amounts. 05:42.320 --> 05:47.560 Now I understand why that enormous gear was not better for our windmill. 05:48.020 --> 05:49.770 Back in the laboratory! 05:49.780 --> 05:52.450 I fitted the right piece in the centre. 05:52.460 --> 05:55.025 Our windmill is ready! 05:55.035 --> 05:59.110 Watch its colourful blades turn in the breeze. 06:00.000 --> 06:00.915 It turns! 06:00.925 --> 06:03.770 My dots make a blue circle. 06:03.780 --> 06:10.470 The little piece had an important job, although the big gear caught our attention. 06:11.040 --> 06:12.580 Your turn, little explorers! 06:12.590 --> 06:17.110 If we need only a little of something, does that mean it is unimportant? 06:17.120 --> 06:20.760 Think about zinc and tell us! 06:24.000 --> 06:27.620 No! A small amount can matter a lot. 06:27.630 --> 06:31.284 Our bodies need a little zinc, alongside other 06:31.294 --> 06:34.550 nutrients. We find it in different foods. 06:35.000 --> 06:40.280 With a grown-up, draw small things that do useful jobs. 06:40.290 --> 06:43.990 I will draw a button and a bee. 06:44.000 --> 06:45.870 What would you choose? 06:46.130 --> 06:49.550 I will draw our windmill’s little helper! 06:49.560 --> 06:52.120 The enormous gear can pose another day. 06:52.130 --> 06:54.110 Today, my paper is not big enough for it! 06:55.040 --> 06:57.530 Thank you for your questions and discoveries! 06:57.540 --> 07:02.930 Keep your curiosity, and we will see you next time at the Why Lab. 07:02.940 --> 07:04.030 Goodbye, everyone!