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1, , The Fish Tale, , Deep under the sea, See the lovely coloured fish, Swimming peacefully, This special poem in three, lines is called a Haiku. Such, poems about nature are, popular in Japan. Here is, another Haiku—, The lake, calm, smooth, still, A fish jumps up and returns, Ripples shake the lake, , Navyata Class I, , Do you know any poems about fish?, Here are some drawings made by, children., When you think of fishes what, shapes come to your mind?, ❈ Try to use a square and a, triangle to draw a fish., , 1, , 2021-22, , ya, , Ma, , ss, , Cla, , IV

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Look for fish designs around you — on cloth, in paintings,, on mats, etc., , ‘Meen ’ means a fish and ‘Meenakshi ’ is a girl whose, eyes look like a fish. Can you think of someone who has, such eyes?, ❈ Draw a face with ‘fish eyes’., Fishes can have very different sizes. The smallest fish is about, 1 cm long. How long is the biggest fish you can imagine? _______, ❈ How many times longer is your big fish than the smallest fish?, The biggest fish is the whale shark. It is actually not a whale but, , is a big, big fish. Whales are different from fish. Whales breathe, like we do, through their noses. But fish have no noses and they, take in water, not air. Whales give birth to babies, but fish lay, eggs. The whale shark fish looks big and dangerous, but is quite, harmless. It does not attack humans., One whale shark was as long as 18 m. Just think how long that, is – almost 12 children of your size standing one on top of the, other! And guess what it weighed? Well, much, much more than, what 12 of you together weigh! Its weight was about 16000 kg!, , 2, , 2021-22

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❈ About how many kilograms do you weigh? __________, ❈ So 12 children like you put together will weigh about _______ kg., ❈ About how much more does the whale shark weigh than 12, children like you put together? __________, The Fish Tail, To see the difference between whales and fish look carefully at, their tails. Can you see that the fish tail stands flat along its body,, but the tail of the whale almost looks like two legs. Can you spot, the fish in the picture?, , “Schools” of Fish!, Fish like to swim together in the sea in big groups called, ‘‘schools” of fish. In their school they feel safe from the bigger fish., (Do you feel safe in your school?), , This is a thematic chapter which presents to children the world of fish and fish workers through, an integrated approach. Mathematical concepts, such as shapes, estimation, sense of large, numbers, simple operations, speed, loans, etc. are woven into real-life contexts to allow a, creative revision of some ideas learnt earlier., , 3, , 2021-22

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To scare away the bigger fish, some small fish drink up a lot of, water, swell up and look big!, , ❈ Jincy used these shapes to make drawings of fish. Now you also, use some shapes to draw the different sea animals shown below., , Sea urchin, , Lobster, , Red snapper, , Eel, 4, , 2021-22

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Parrot fish, , Clam, , n, Praw, , Cuttle fish, , Octopus, , Jelly fish, Squid, , et, , r, mf, , o, , p, er, , lv, , Si, , Crab, , ❈ Which of these sea animals have you seen before?, Fishermen in their Boats, How many of you have seen the sea? Where did you see it? Did, you see it in a movie or for real? How deep do you think the sea, could be? Find out., Do you know how to swim? Would you be scared of the high, sea waves?, 5, , 2021-22

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❈ Close your eyes and imagine the sea with waves rising high., ❈ How high do you think the waves can go? __________, , Imagine that there are fishermen in their, boats, going up and down with the waves., They start their trip when it is still dark., Some go on a simple boat made from logs of, wood tied together. If the sea is rough, with, very high tides and a strong wind, then, these fishermen have a very difficult time., , Log boat, , These log boats do not go very far., If the wind is helpful, they travel, about 4 km in one hour., ❈ How long will they take to go a, distance of 10 km?, ❈ Guess how far you can go in, one hour if you walk fast., Log boat, , 6, , 2021-22

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Fishermen can feel the wind, and look at the sun to find out, which way to go. Many of us, would get lost and not be able, to find our way on the sea, where you only see water,, water, and nothing else!, Find out, Look at the sun and find out the direction from where it rises., ❈ Fromwhereyouare,whatinterestingthingdoyouseetoyoureast?, ❈ Name two things that are lying to your west., What a Catch!, Out on the sea, fishermen look for a, place where they hope to find a good, catch of fish. There they spread, their nets. They will have to wait for, many hours for the fish to come into, their nets., What a long sword-fish!, , ❈ Look at the different types of boats., Some boats have motors and go further into the sea. Since they, go far out they can catch more fish. These boats travel faster, at, the speed of about 20 km in, one hour., ❈ How far would the motor, boats go in three and a half, hours?, ❈ How much time will they, take to go 85 km?, Oar boat, , 7, , 2021-22

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Moto, , t, , r boa, , Moto, , Long tail, , r boa, , Big mac, , boat, , hine boa, , t, , t (trawle, , r), , But the fishermen are now very worried., There are some very big machine boats, (trawlers) in the business. They go far, out and put their big nets deep in the, sea. This way they collect a whole lot of, fish, leaving very few near the sea, shore. They also stay out on the sea for, many days., These big machine boats also catch, the small baby fish, which have yet to, grow up. Fishermen in the smaller, boats always let the baby fish pass, through their nets to go back into the sea. They choose a net, size in such a way that only the grown up fish are caught., 8, , 2021-22

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For hundreds of years fishermen have cared for the sea, and its fishes, and fished only a little to eat and sell., They say that if trawlers catch thousands of kilograms, of fish everyday, there will be no fish left in the sea!, ❈ Write a news report about, the dangers faced by the, fishes in our rivers and, seas., Which, Much?, , Boat, , Gets, , How, , In one trip the log boat, brings about 20 kg of fish., But other types of boats, bring a bigger catch as, given in the table. The table also shows the speed of each type of, boat, which is how far each boat goes in one hour. Look at the, table and calculate —, a), , About how much fish in all will each type of boat bring in, seven trips?, , b), , About how far can a motor boat go in six hours?, , c), , If a long tail boat has to travel 60 km how long will it take?, Type of boat, , Log boat, , Catch of fish in, one trip (in kg), , 20, , Speed of the boat (how far, it goes in one hour), 4 km per hour, , Long tail boat, , 600, , 12 km per hour, , Motor boat, , 800, , 20 km per hour, , 6000, , 22 km per hour, , Machine boat, , 9, , 2021-22

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Some Big, Big Numbers!, In the Class IV Math-Magic you heard of the number, ‘lakh’ which is equal to a hundred thousand. You had, read that there are about one lakh brick kilns in our, country, where bricks are made., ❈ What other things have you heard of in lakhs?, ❈ Write the number one thousand. Now write one hundred, thousand. So how many zeroes are there in the number, one lakh? Easy, isn’t it?, ❈ There are about two lakh boats in our country. Half of, them are without a motor. What is the number of, boats with a motor? Write it., ❈ About one fourth of the boats with a motor are big, machine boats. How many thousand machine boats, are there? Come on, try to do it without writing down., We might wonder about the number of people whose, lives are related to fish. In all there are about one, hundred lakh fishworkers — who catch fish, clean and, sell them, make and repair nets, and boats, etc. We also have a, name for this big number — ‘one, hundred lakh’ is called a crore., ❈ Where have you heard of a, crore? What was the number, used for?, ❈ Try writing the number one, crore. Don't get lost in all the, zeroes!, 10, , 2021-22

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The Fish Market, Have you been to a fish market? If, you have then you might know why, a very noisy place is sometimes, called a ‘fish market’!, This fish market is busy today., , Many boats have brought a good catch. The fisherwomen are, shouting out their prices to the buyers., Mini — ‘‘Come here! Come here! Take sardines at Rs 40 a kg’’., Gracy — ‘‘Never so cheap! Get sword-fish, for Rs 60 a kg’’., Floramma sells prawns for Rs 150 a kg., Karuthamma sells squid for Rs 50 a kg., Look, Fazila can hardly carry this big, kingfish! She says, ‘‘This fish weighs, 8 kg. I will sell the whole for Rs 1200’’., Practice Time, 1) At what price per kg did Fazila sell, the kingfish?, 2) Floramma has sold 10 kg prawns, today. How much money did she, get for that?, 3) Gracy sold 6 kg sword fish. Mini, has earned as much money as, Gracy. How many kg of sardines, did Mini sell?, 11, , 2021-22

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4) Basheer has Rs 100. He, spends one-fourth of the, money on squid and another, three-fourth on prawns., a. How many kilograms of squid did he buy?, b. How many kilograms of prawns did he buy?, Try saying this fast!, Here is a tongue twister. Repeat it fast!, She sells sea shells on the sea-shore., She is sure that the shells that she sells, will be there no more., , Women's 'Meenkar Bank', The meeting of the Meenkar Bank has just begun. Fazila is the, president. Twenty fisherwomen have made their own bank. Each, saves Rs 25 every month and puts it in the bank., ❈ How much money does the group collect each month?, ❈ How much money will be collected in ten years?, Practice time, Gracy needs money to buy a net. Jhansi and her sister want to, buy a log boat. So they take a loan from their bank. They will, return it with interest., a) Gracy took a loan of Rs 4000 to buy a net. She paid back, Rs 345 every month for one year. How much money did she, pay back to the Bank?, 12, , 2021-22

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b) Jhansi and her sister took a loan of Rs 21,000 to buy a log, boat. They paid back a total of Rs 23,520 in one year. How, much did they pay back every month?, Earlier women did not go on the boat to fish. But now Jhansi and, some others are going on the boats during the day. Things are, changing now and their Bank helps them. They have also got a, special bus to take their baskets full of fish., , Why Don't We Start a New Fish-drying Factory?, The women of Meenkar Bank also want to start a factory to dry, fish. The Panchayat has given them some land for that. Over the, years they have saved Rs 74,000. They find out how much they, will need for the factory., Fazila writes the things they need to buy to begin. See the table, for the cost of each item and the number of items they want to, buy. Find the total cost., 13, , 2021-22

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Price, of each, , Item, , Number of, items, , Bore well for fresh water, , Rs 3000, , 1, , Bamboo rack for fish drying, , Rs 2000, , 20, , Cement tank, , Rs 1000, , 4, , Rs 300, , 20, , Rs 75, , 20, , Tray and knife, Bucket, , Cost, , Total cost to set up the factory = ____________, When fresh fish is dried it becomes 1/3 its weight., In one month they plan to dry 6000 kg of fresh fish., How much dried fish will they get in a month? ____________, , Floramma — Let us first calculate for 6 kg of fresh fish., We buy fresh fish for, , Rs 15 per kg, , We sell dried fish for, , Rs 70 per kg, , We dry 6 kg fresh fish to get _____ kg dried fish, For 6 kg fresh fish we have to pay, , 6, , ×, , __ = Rs 90, , We will sell 2 kg dried fish and get, , 2, , ×, , __ = Rs __, , __, , –, , 90 = Rs __, , So if we dry 6 kg fresh fish we will earn, , But if we dry 6000 kg we can earn Rs __, in one month!, , 14, , 2021-22, , × 1000

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They are all very happy with this plan., The group can make profits and each, woman can get a salary for the work, she does., Jhansi — I found that for 6000 kg fish, we would need 1500 kg salt every, month! Its price is Rs 2 per kg., Monthly costs:, a) Salt, , 1500 × 2 = Rs ____, , b) Packing and bus charges = Rs 3000, So the total monthly cost of drying and, selling the fish, = Rs ____, Fazila — That sounds very good! Our, calculations tell us that every month, our Bank will earn Rs 44,000!, ❈ Check to see if you also get the, same answer., , Find out, Songs sung by, fishermen are, beautiful. Find out, about the words and, tunes of such songs., , 15, , 2021-22