WEBVTT 00:04.020 --> 00:05.290 Welcome to the Why Lab! 00:05.300 --> 00:09.970 We are making a paper windmill, but something is missing from the middle. 00:09.980 --> 00:11.750 Let us take a look! 00:12.100 --> 00:13.970 I drew blue dots and yellow stripes. 00:13.980 --> 00:15.380 It looks so pretty! 00:15.390 --> 00:18.020 But the blades will not stay in place. 00:18.030 --> 00:20.140 What did we forget, Eirini? 00:21.090 --> 00:24.350 Do not worry! I brought the biggest gear in the laboratory. 00:24.360 --> 00:26.450 It is as big as my head. 00:26.460 --> 00:29.240 Such a huge helper must work! 00:30.090 --> 00:32.800 Pico, I cannot see the windmill behind that gear! 00:32.810 --> 00:34.550 Could it be too big? 00:34.560 --> 00:37.190 Or is our windmill much too small? 00:38.080 --> 00:39.420 Our windmill is fine. 00:39.430 --> 00:42.560 It needs the right little piece in its centre. 00:42.570 --> 00:45.430 I will fit it, and you can watch. 00:46.030 --> 00:47.930 My enormous gear cannot help here? 00:47.940 --> 00:49.460 I will put it aside. 00:49.470 --> 00:53.620 For now, it wins the prize for being our biggest visitor! 00:54.050 --> 00:55.890 Look at these pieces on the workbench. 00:55.900 --> 00:58.420 The big one does not fit. 00:58.430 --> 01:02.870 The little one has exactly the shape our windmill needs. 01:03.030 --> 01:03.980 That tiny little thing? 01:03.990 --> 01:05.770 I almost overlooked it! 01:05.780 --> 01:09.810 It seems I made a mistake when I chose just by thinking about size. 01:11.000 --> 01:13.620 So size does not tell us how important something is? 01:13.630 --> 01:16.990 Does our body need some nutrients in small amounts too? 01:18.030 --> 01:22.715 Yes! One is zinc, an essential nutrient found in food. 01:22.725 --> 01:27.030 Our bodies need only a little, so we call it a trace mineral. 01:28.070 --> 01:31.040 Trace mineral! A big name for a small amount. 01:31.050 --> 01:35.150 I will write it beside our discovery: a little can matter! 01:35.160 --> 01:36.780 That deserves a star! 01:38.000 --> 01:42.180 Our windmill gave us an idea, but a body is not a windmill. 01:42.190 --> 01:46.310 Let us leave these pieces and open our body book. 01:47.030 --> 01:49.435 In the picture, I see tiny cells. 01:49.445 --> 01:51.535 They look like different groups! 01:51.545 --> 01:54.750 Are these inside our bodies, doing different jobs? 01:55.110 --> 01:56.850 Yes, our bodies are made of cells. 01:56.860 --> 01:58.880 This is a simple drawing. 01:58.890 --> 02:04.750 Zinc helps many of their functions, alongside other essential nutrients. 02:05.000 --> 02:07.000 So it does not work alone! 02:07.010 --> 02:08.370 I like teams. 02:08.380 --> 02:13.550 I need Nefeli and Eirini, especially when I bring things bigger than the table. 02:14.000 --> 02:16.120 Zinc helps our bodies grow normally. 02:16.130 --> 02:19.330 It also helps our body's defences work properly 02:19.340 --> 02:22.470 and plays a part in helping our skin heal. 02:23.000 --> 02:26.450 So when our body repairs a scratch, lots of helpers work together? 02:26.460 --> 02:29.790 No single hero does every job with a magic wand! 02:30.010 --> 02:35.560 Exactly. Zinc does not give us superpowers or mean we will never get ill. 02:35.570 --> 02:40.470 Our bodies need everyday care, varied food and rest. 02:41.100 --> 02:43.610 I will put my superhero cape away! 02:43.620 --> 02:46.360 It could become a blanket at rest time. 02:46.370 --> 02:49.220 First, where do we find zinc in food? 02:50.020 --> 02:51.702 Our food cards are waiting in the kitchen. 02:51.712 --> 02:53.410 Let us spread them on the table. 02:53.420 --> 02:56.230 We can look together and ask more questions! 02:57.070 --> 03:02.790 Here are pictures of meat, an egg, yogurt, beans and wholegrain bread. 03:02.800 --> 03:07.550 These foods contain zinc, but not in the same amounts. 03:08.050 --> 03:10.940 I see foods from animals and others from plants. 03:10.950 --> 03:15.190 So zinc is not found in just one food with a special name! 03:16.040 --> 03:18.220 I would call beans little spaceships. 03:18.230 --> 03:19.580 Look at their shape! 03:19.590 --> 03:23.720 But I will write beans in my notebook, to avoid confusing our cook. 03:24.090 --> 03:26.160 At home, we put beans in soup. 03:26.170 --> 03:28.530 Other families might cook them differently. 03:28.540 --> 03:32.070 We can discover new recipes and learn about their meals! 03:33.040 --> 03:37.620 Of course. Families eat different foods according to their habits and needs. 03:37.630 --> 03:43.230 We are exploring zinc sources, not giving everyone the same menu! 03:44.010 --> 03:45.670 The cards are in one group. 03:45.680 --> 03:47.590 None wears a crown! 03:47.600 --> 03:52.470 We are learning about different foods, not finding the king of food. 03:53.020 --> 03:58.750 Here is an easy plan for our garden table: one food card, over and over. 03:58.760 --> 04:01.650 Would that make our investigation much quicker? 04:02.020 --> 04:03.460 Foods provide different things. 04:03.470 --> 04:06.280 Keeping only one means losing variety. 04:06.290 --> 04:10.950 Let us keep all the cards in our group and explore them together! 04:12.050 --> 04:13.870 You are right! I will change that. 04:13.880 --> 04:18.630 But if zinc is useful, will more and more of it make our bodies work better? 04:19.000 --> 04:22.340 No, Pico. More does not mean better. 04:22.350 --> 04:24.290 We need the right amount. 04:24.300 --> 04:26.080 Too much can be harmful. 04:26.090 --> 04:29.150 We are not racing for more zinc! 04:30.030 --> 04:32.470 What if someone wonders whether they need a supplement? 04:32.480 --> 04:35.140 We cannot decide on our own, can we? 04:35.150 --> 04:37.510 That question needs a grown-up’s help. 04:38.040 --> 04:42.820 Right. Parents discuss their child’s needs with a doctor or pharmacist. 04:42.830 --> 04:47.510 Supplements are not toys. Children should never take them on their own. 04:48.010 --> 04:51.990 Second correction! Varied food, not a race for bigger amounts. 04:52.000 --> 04:56.740 Now I understand why that enormous gear was not better for our windmill. 04:57.020 --> 04:58.060 Back in the laboratory! 04:58.070 --> 05:01.020 I fitted the right piece in the centre. 05:01.030 --> 05:03.300 Our windmill is ready! 05:03.310 --> 05:07.150 Watch its colourful blades turn in the breeze. 05:08.100 --> 05:10.890 It turns! My dots make a blue circle. 05:10.900 --> 05:16.210 The little piece had an important job, although the big gear caught our attention. 05:17.030 --> 05:18.530 Your turn, little explorers! 05:18.540 --> 05:23.280 If we need only a little of something, does that mean it is unimportant? 05:23.290 --> 05:25.780 Think about zinc and tell us! 05:29.000 --> 05:31.910 No! A small amount can matter a lot. 05:31.920 --> 05:35.230 Our bodies need a little zinc, alongside other 05:35.240 --> 05:38.750 nutrients. We find it in different foods. 05:39.090 --> 05:41.870 With a grown-up, draw small things that do useful jobs. 05:41.880 --> 05:44.300 I will draw a button and a bee. 05:44.310 --> 05:45.950 What would you choose? 05:47.030 --> 05:49.080 I will draw our windmill’s little helper! 05:49.090 --> 05:51.750 The enormous gear can pose another day. 05:51.760 --> 05:54.890 Today, my paper is not big enough for it! 05:56.020 --> 05:58.190 Thank you for your questions and discoveries! 05:58.200 --> 06:02.700 Keep your curiosity, and we will see you next time at the Why Lab. 06:02.710 --> 06:03.990 Goodbye, everyone!