Nation Public School, Bulandshahr

Holiday Homework 2019-20 Class -8thMathematics

Topic Activity Skills enhanced/learning outcomes

Rational Numbers

Activity-1: Subtopic: Operation on rational numbers. Description: Twenty caravans are travelling across the desert one day apart. The first caravans reached the oasis and the camels drank half of the water in the pool. On the second day, the second caravan reached the oasis and the camels drank one –third of the water that was left. On the third day, the camels in the third caravan drank one- quarter of the water that was left. On the first day the pool contained 1050 m3 of water. How much water was left after the 20th caravan passed through and calculate.

Recall, appreciate the need of rational numbers in daily life.

Activity-2: Subtopic: Addition and subtraction of rational numbers. Description: Write fractions in mixed form and find out the hidden word.

1.

2.

3.

4.

5.

(

)+(

)+

6.

7.

1 2 3 4 5 6 7 8 8.

(

)

Calculation

Problem Solving

Linear equations in one variable

Activity 1: Framing linear Equations Find out the age of your grandfather and father. Form a linear equation between these two –

a) Age of your grandfather and your age. b) Your age and your father’s age.

Activity 2: Take a dice and throw it Get the boost and calculate your score. Play with your friend

6x+2=9 4x+3=7

7x+7=9 5x-5=15

50 49 48 47 8x-3=7 45 44 43 42 41

40 3x-1=4 39 38 37 36 35 34 33 32 31

30 29 28 27 26 25 7x+1=4 24 23 22 21

20 19 18 17 16 15 14 13 12 11

10 9 8 7 4x-2=6 6 5 4

7x+1=2 3 2 1

Real life application of linear equations

Fun with equations

Numerals ability

Interpersonal skills

Answers:

A- 𝟏𝟏

𝟐 I-

𝟔

𝟑𝟓

N- 𝟔𝟏

𝟐 L-

𝟏𝟑

𝟑𝟔

R- 𝟐𝟏

𝟔 A- 𝟏

𝟏

𝟏𝟐

O- 𝟏𝟐𝟓

𝟒𝟔𝟐 T-

𝟓𝟏

𝟓𝟔

Mathematics Questions

1. One fruit salad recipe requires

cup of sugar. Another recipe for the same fruit salad requires 2 tablespoons of sugar. If 1

tablespoon is equivalent to

cup, how much more sugar does the first recipe require?

2. Four friends had a competition to see how far they could hop on one foot. The table given shows the distance covered by each.

Name distance covered (Km)

Seema

Nancy

Megha

Soni

(a) How farther did Soni hop than Nancy? (b) What is the total distance covered by Seema and Megha? (c) Who walked farther, Nancy or Megha?

3. The overall width in cm of several wide- screen televisions are 97.28 cm,

cm,

cm and 97.94 cm. Express these

numbers as rational numbers in the form

and arrange the widths in ascending order.

4. Roller coaster at an amusement park is

m high. If a new roller coaster is built that is

times the height of the existing coaster,

what will be the height of the new roller coaster? 5. Here is a table which gives the information about the total rainfall for several months compared to the average monthly rains

of a town.

Write each decimal in the form of rational number

.

Month Above /Below normal (in cm)

May 2.6924

June 0.6096

July -6.9088

August -8.636

6. The average life expectancies of males for several states are shown in table. Express each decimal in the form

and arrange

the states from the least to the greatest male life expectancy. State – wise data are included below; more indicators can be found in the “FACTFILE” section on the homepage for each state.

state Male

form Lowest terms

Andhra Pradesh 61.6

Assam 57.1

Bihar 60.7

Gujarat 61.9

Haryana 64.1

Himachal Pradesh 65.1

Karnataka 62.4

Kerala 70.6

Madhya Pradesh 56.5

Maharashtra 64.5

Orissa 57.6

Punjab 66.9

Rajasthan 59.8

Tamil Nadu 63.7

Uttar Pradesh 58.9

west Bengal 62.8

India 60.8

7. A skirt that is

cm long has a hem of

cm. how long will the skirt be if the hem is let down?

8. Manavi and Kuber each receive an equal allowance. The table shows the fraction of their allowance each deposit into his /her saving account and the fraction each spends at the mall. If allowance of each is Rs.1260, find the amount left with each.

Where money goes Fraction of allowance

Manavi Kuber

Saving Account

Spend at mall

Left over ? ?

9. The sum of two consecutive multiples of 10 is 210. The smaller multiple is ______________. 10. Solve the following :

1)

=1

2)

=2

3)

=

4) 0.4(3x-1)=0.5x+1

5)

(

)=

( )+

6)

( )+

(x-1)=

( )

7)

=

8)

=

9)

=1

10) 0.16(5x-2)=0.4x+7

11. Radha takes some flowers in a basket and visits three temples one by one. At each temple, she offers one half of the flowers from the basket. If she is left with 3 flowers at the end, find the number of flowers she had in the beginning.

12. The sum of three consecutive odd natural numbers is 69. Find the prime number out of these numbers. 13. The sum of three consecutive numbers is 156. Find the number which is a multiple of 13 out of these numbers. 14. Find a number whose fifth part increased by 30 is equal to its fourth part decreased by 30.

15. Divide 54 into two parts such that one part is

of the other.

16. Two equal sides of a triangle are each 4m less than three times the third side. Find the dimensions of the triangle, if its perimeter is 55m.

Some creative steps to become Scientist A CANDLE-FLAME CONSUMES OXYGEN

Fire cannot burn without oxygen. If we seal a burning candle in a glass jar, it will go out after it has used up all the oxygen. We have already said that oxygen makes up one-fifth of the volume of air. We shall prove it with this experiment. Activity: To find out oxygen is consumed by a candle flame? Required materials: A candle, Plasticine, A small saucer, food dye, coins, a glass jar and water. How the experiment is performed?

1. Fix the candle vertically with a blob of plasticine in the middle of the saucer. 2. Place four stacks of coins around the candle to form a base for the jar. 3. Pour water coloured with the food dye into the saucer to the brim. 4. Ask an adult to light a candle and to place the jar carefully over it.

What will happen? After a few minute the candle will go out and the level of the water will rise.

Why? The flame consumes the oxygen of the air in the jar as it is consumed; water enters the jar to replace the oxygen used up. The level of water will reach about one-fifth of the way up the jar. The flame will go out as all the oxygen is consumed. Compare burning time for candles in variously sized jars. If they burn longer, there was more oxygen in the jar.

Note:- Do this activity at your home.. You don’t need to bring it to school.

Science

Crop production and management Interdisciplinary with social Science

Activity 1: Agriculture Implements To identify and understand the usage of implements used in the agriculture. Collect the pictures of various agricultural implements and paste then into your notebook. Write down their usage.

Identification

Observation

Correlation

Understanding

Observation

Identification

Activity 2: Seeds To study the effect of moisture on the germination of seeds.

a) The students it takes the ground seeds. Divide the seeds into three sets A,B and C.

b) Put the seeds of set A on the moist cotton. c) Soak the seeds of set B in the water overnight and then put on the

moist cotton for seeds germination. d) Put the seeds of set C in the boiling water for some time them now into

germinate on the moist cotton. e) Note the observation.

Set A Set B Set C

Seeds

Planning and organizing

Observe

Interpret

Deduce

Activity 4: Collect information about the various method of irrigation follows. Categories them into conventional and modern method. which method you like the must and why ?

Critical thinking

Analysis

Observation

Microorganisms : friend and foe.

Activity 1: Curd formation to study the condition necessary for the growth of curd bacteria under the guidance of your mother for an elder at home make arrangement for the formation of curd.write your experience in tha form of a paragraph. Also write the name of bacteria involved in formation of curd.

design

planning

organizing

writing skills

communicate

interpersonal skills.

Activity-2: Preservatives 1. To know about the different methods of preservation. a) Find about the preservative present in these food items. b) List the various the preservative and methods of their preservation.

Observation

Critical thinking

Analysis

Synthesis fibric of plastics

Activity -1: Biodegradable and non- biodegradable materials. Find out biodegradable and non- biodegradable materials used in day to day.

Identification

Classification

Observation

Interpreting about the result

interpretation

Social Science

Topic

Geography

Activity Skills Enhanced/learning

Outcomes

Resources Activity 1:- Web Chart

Prepare a web chart showing different types of resources with

categories and sub- categories of resource like

1. Natural 2. Human -mad

Artistic skills

Creativity skill

Organization

Classification

Activity 2:- Data collection

Prepare a list of resources found in your state. Also highlight the

resource that the states deficient in.

Collection

Organization

Observation

Activity 3 :- Poster making

Make a poster on ‘Conservation of Resources’. Poster can depict

problems of resource depletion, use of alternate resources and any

innovative methods.

Creativity

Artistic skills

Understanding

Analysis

Topic History

Activity Skills Enhanced/learning

Outcomes

How, when and

Where?

Activity -1;

Essay writing on “ Problems of Periodization in History”

Evaluation

Analysis

Understanding

Activity -2:

Prepare a travelogue on any museum you have visited and discuss how

the sources of history displayed there help us in reconstruction of past.

Critical thinking

Application

Knowledge

Understanding

Analysis

Topic Civics Activity Skills Enhanced/learning

Outcomes

The Indian

Constitution

Activity -1: Designing Preamble’

Design a preamble for your school abiding to all the rights and

duties of all the students in school. You can also take hint from

preamble of ‘Constitution of India ‘.

Understanding

Creativity

Thinking

Application

Analysis

Understanding

Secularism

Activity -1: Case study

Prepare a case study of any one country other than India,

discussing the idea of ‘secularism ‘according to them. You can

discuss the religious policy, religious harmony or conflicts among

different groups in that country while comparing it with secularism

in India.

Understanding

Application

Analysis

Evaluation

Synthesis

Critical thinking

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Honeydew

Topic Activity Skills Enhanced/learning Outcomes

The best Christmas present in the world

Activity -1: Prepare a short note on the topic of “war can end conflicts”.( for upcoming debate)

Speaking skills

Reasoning

Problem solving

Activity -2: Collage making Make a collage based on any two events during the World War 1

Critical thinking

Creativity

Imagination

The tsunami Activity -1: Diary Entry Suppose you were one of the victims of Tsunami. Write a diary entry for the same.

Creativity

Imagination

Empathy Writing skills

Activity -2: Message Writing Assuming that you have to initiate a donation camp for a tsunami hit area and communicate about the sense in your locality/area, write a „message „for the same.

Creativity thinking, problem solving

Caring for human life

Writing skills

communication

1. 2.

3. 4.

5. 6.