Waiting for the Buses Sahiba jumps out of the line to see if the buses are coming. She shouts loudly — Hey! I can see them. Run! Grab the window seats. Many children start jumping in excitement. But .......... Now there is an argument. Each mini bus can take 35 students. How many mini buses are needed? The Journey Begins As the buses start moving, children sing at the top of their voices. Some look outside to enjoy the view of the green fields and the hills. Indra — When will we reach Bhopal? Ms. Asha — If we don't stop anywhere, we should reach there in 2 hours, that is around ______ o' clock. Manjeet — Is it very far? Mr. Bhimsen — It is about 70 km. Ruby — Are we going to stop anywhere? Mr. Rakesh — May be at Bhimbetka, about 50 km from here. If they go to Bhimbetka, they will reach there ✤ — Before 10 o'clock — Between 10 o'clock and 11 o' clock — After 11 o' clock As they are talking, Bahadur shouts — Hey! look at the Narmada. Everyone looks out of the windows. Ruby — Wow! it is soooo long and so wide! Let us guess how wide it is. Gopi — Uhm---m, 100 metres? No, it is much more. Can't say. Victoria — It must be more than half a kilometre. Ms. Asha — Look, it is written – 'This bridge is 756.82 metres long'. So we can guess that the Narmada must be about 500 metres wide at this place.Was Victoria right ? ✤ Sadaf — I just can't imagine 500 metres. Ms. Asha — See, our bus is about 5 metres long. Imagine how many buses can stand in a line on this bridge. Have you ever crossed a long bridge? About how many metres ✤ long was it? ____________ Everyone looks down at the river. Mr. Rakesh — The water level now is quite low. It must be about 40 metres below the bridge. Ms. Asha — But in the rainy season, the water had risen. Then it was just about 15 metres below the bridge. What is the difference between the water level of the Narmada ✤ in the rainy season and now? ___________ metres. The children discuss about the river for some time. ...... Suddenly, the bus stops with a jerk. Oh! The petrol pump. Two buses need to be refilled. The buses stand in a line. Children are sticking their necks out to see how diesel is filled in the bus. Some children have got down to look more closely. Each bus takes about 15 minutes to refill and there are two ✤ buses to be refilled. So they stop there for about _________ minutes, which means they are late by about _______ minutes. Rupees: 175.00 Litres: 5 Rate per Litre: 35.00 Hey it has such a big tummy! It has already taken 100 litres. ✤______Look in the picture and find the price of 1 litre of diesel. As the buses are being refilled, some children go to the toilet near the petrol pump. How much time did Aman take to come out of the toilet? __________ Lunch Time The children are hungry by this time so they take out their lunch-packs. Biscuits, oranges and bananas are also distributed in all the buses. Each child is to be given 1 orange, 1 banana and 5 biscuits. All the children take oranges and biscuits but 38 children do not take bananas. How many oranges, biscuits and bananas are distributed? ✤ Manjeet and Bhanu quickly finish their lunch and start asking puzzles to pass the time. Manjeet — Tell me the number which is exactly between 100 and 150. Bhanu — 120 ... no, 130 ... no it is 125. Manjeet — Right. OK! You ask now. Other children join in. Everyone is asking puzzling questions. A BI gave four toffees What numbers can youmake using 3, 5 and 7? each to four of my friends and three toffees are left with You can make 357 and537. What others? me. How many toffees 32 did I have? C A number becomes double if it is increased by 8. What is the number? Children can be asked to solve many more similar questions or puzzles, both orally and in writing. They should also be encouraged to explain the strategies they use. D Think of a number which can be divided by 2, 3 and 5 and comes E A small ant climbs between 25 and 50. 3 cm in 1 minute but slips down 2 cm. How much time will it take Can you solve these? Try them out. to climb to 2 cm? Which Boat do We Take? They are so lost in puzzles that they do not notice they have reached the lake. It is a very big lake with a small island in it. The lake looks very beautiful at this time. There are a lot of ducks making a loud noise. Some children give them popcorn. Now comes the exciting part! It is time to go for boating. They have to choose which boat to take. But that is not easy. There are different kinds of boats. Each has a different ticket price, and also different trip times. Based on the table showing ticket rates, trip time etc. some questions are given in the book. Children should be motivated to make many more questions themselves. ✤Indra and Bhanu first went in the motor-boat, and then took the oar-boat. How much did they pay for both the boats? Rs __________ How much time did they get for both rides? __________ ✤ of children went for the double-deckerOne group trip. They paid Rs 450 in total. How many children went for the double-decker trip? ______________ ✤Which boat makes two trips in 1 hour? ✤ aWhich boat takes less than half an hour to complete trip? ✤Which boat gives them the most time taking the least money? ✤Javed went twice for boating. He paid a total of Rs 40. and boated for 50 minutes. Which two boats did he take? ________ Time to Return Children enjoy different boat rides till 4 o'clock. It is time to return. Now they will not stop anywhere and reach back in two hours. So, they should reach Hoshangabad by __________ o'clock. Find out Have you ever been on a school trip? How many children were there in all? How did you go and how far? How much time did it take? Try to find out the cost of travel for each child. Practice Time 1. There are four very old cave-paintings. Mark the oldest. a) 4200 years old c) 8500 years old b) 1000 years old d) 1300 years old 2. One bus can carry 48 children. How many children can three buses carry? About — a) 100 b) 200 c) 150 3. Which pair of numbers add to make more than 500? a) 152 and 241 c) 99 and 299 b) 321 and 192 d) 401 and 91 4. What happened at what time? Draw lines to match. ✤Crossed the Narmada bridge 3:00 p.m. ✤Looked at Bhimbetka paintings 6:00 p.m. ✤At the petrol pump 9:10 a.m. ✤Boating in the lake 12:30 p.m. ✤Had lunch 11:30 a.m. ✤Retu ned to Hos angabad h 9:30r a.m.

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3
A Trip to Bhopal
Today Sugandha is very excited. All the children of her school are
going on a trip to Bhopal with their teachers. Ms. Meenakshi and
Mr. Rakesh are talking about the number of buses needed.
Ms. Meenakshi — We will need 4 buses.
Mr. Rakesh — I think we need at least 5.
Ms. Meenakshi — Each bus has 50 seats.
Mr. Rakesh — Let us see how many
children are going.
Class
Number
of
children
I
II
III
IV
V
Total
So there are a total of __________ children going.
If they get 4 buses, how many children will get seats? _______
Will there be any children left without seats?
For just a few
children, we can't
get another bus!
share seats.
We can
Children should be encouraged to estimate first and then find out the answer using any
method they want. It is important to discuss the methods children use to solve a problem.
23
33
32
42
50
53
Do we need 4 buses?
One
bus
can
ak
50
can take 50 × 4 ...?
children,
4
uses
.
t e
b

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