answr tech for sn in bi

8/10/2019 Answr Tech for Sn in Bi

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UPSR SCIENCE

BERSAMACIK GU MOHAMA D NOR IQMAL


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complete

In order

accurate

simple

Fixed to the needs ofthe question

Fixed the marking


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* Conquer scientific skills and thinking skills

* Understand and full-use the science term

* Understand concept/theory and science fact.

* Maths skills- emphasize on the units

* Intepret information effectually


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Criterion;

The use of our senses to identify and describean objects properties

Focus ; co m pare before and after d i fferenc e and s im ilar i ty

* on the m ain idea (resp on din g var iable /

w hat to m easure


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Pond A Pond B

An investigation on the fish pond in Pak Abus pond wascarried out by an agriculture officer. The picture shows theresult written by the officer.

Based on the officer result write one observation.

________________________________________________The size of fish in pond B is bigger than that in pond A.


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Time (minute)

0

100

80

60

40

20

2 4 6 8 10 12

Watertemperature (C)

The graph above shows the result of an investigation onthe temperature of water when heated.

State the temperature of water at 10 until 12 minutes.

________________________________________________________________The temp erature rem ains at 100 o C / The temperature do es no t chang e.


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An investigation conducted by a naturalist on the numberof hippotatamus that live in the forest X and Y for 5 years

was recorded in the table below.

YearNumbers of hippotatamus

Forest X Forest Y

1980 11 98

1981 23 78

1982 34 65

1983 47 51

1984 89 30

What can be stated about the difference between the number ofhippotatamus in forest X and Y

________________________________________________________________ ________________________________________________________________The number of hippotatamus in forest X increase whilehippotatamus in forest Y decrease.


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Notes:Manipu lated var iable (w hat to change [ TC ] ) :- i t em s / ob jec t s w hich w e change dur ing the experiment

Respond ing v ar iable (w hat to m easu re [ TM ] ) :-Items / object wh ich chang e af ter the exp er im ent .- I t s usu ally th e resul t o f the exper iment .

Con stan t variable (kept the sam e [ KS ] ) :-Items/objects which doesnt change before or after the experiment

Criterion;Items or objects that used in an experiment which can be manipulate

and influence(change) the result of the experiment.

Manipu lated va r iab le is c hanged to o bse rve i t s r e la tionsh ip w i th the respond ingVariable . At the sam e t ime, the f ixed v ar iables are kept con stant .


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Can be determine through;

a. Inference

cause ( TC )

Observation ( TM )


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Observation( TM )

cause

( TC )

More leaf

Less leaf

Number of leaf

Enoughfertilizer

Not enoughfertilizer

Quantity offertilizer


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Many nails

Less nails

Numbers ofnail

Strong magnet

Weak magnet

Strength of magnet

Observation ( TM )cause( TC )


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long rubberband

short rubberband

length ofrubber band

heavy block

light block

Weight of block

12 cm 14 cm16 cm

rubber band

block

Observation ( TM ) cause( TC )


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The figure below shows the finding when two sponges ofdifferent sizes was soaked in containers filled with water.Initially, the volume of water in each container was 700 ml.

500ml 329ml

TC: s ize of sp on ge

TM: vo lum e of remain w ater

K S: Ini t ia l w ater vo lum e


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c. Diagram

- table

- graph


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Month

10

20

30

40

5060

70

80

90

JulyJan March Mei Sept Nov

w a

t e r

l e v e

l ( m e t r e

)

State the following variables;

i. Manipulate variable / what to change : .

ii. Responding variable / what to measure :

TM TC

Water level

Month


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Constant variable (keep the same)

TC : Quantity of fertilizer

KS : fertilizer

change to otherparameter

Rewrite technique

reference : ( manipulate variable / TC )

- ch ange the param eter of TC wi th o th erparameter

type of

size

quality

etc


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Criterion:

using past experiences or previously collected data to writeconclusions and explain events.

a) State a relevant explanation about observationb) State other relevant explanation about observation

c) State additional observation to test the inference validityd) State inference for earlier conclucion or hyphotesis

note;

i . If ob servat ion is s ta ted in quest io n, s tu dent need to givereason on ly

i i . If sp ace for obs ervation is prov ided then obs ervation m us t bewri t ten

i i i . Focus on m anipula ted var iable / wh at to chang e


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a) Free inference: State a re levant explanation about ob servat ion

Pond A Pond B

Inference 1:_______________________________________

2:_______________________________________

Observation : 1. The size of fish in pond A is small.

2. The number of fish in pond B is lessBased on any of the observations chosen, write twoinferences.

Observation:_____________________________________The s ize of f i sh in po nd A i s sm all .

Because there i s l ess food

B ecaus e the f ish are not h eal thy


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Pond A Pond B

Based on any observation given, write two inferences aboutthe difference between the size of fish in pond A and pond B

1_________________________________________________

_________________________________________________ _________________________________________________

2._________________________________________________ _________________________________________________

The s ize of f is h in p on d A is sm al ler than the s ize off is h i n p o n d B because the f ish in p on d A has less fo odcom pare to the f ish in po nd B .

The s ize of f ish in p on d A is sm aller than th e s ize off is h i n p o n d B becaus e mo st o f the f ish are no t heal thy.

b) State other relevant explanation about observation- compare inference


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A few days after Pak Abu had sprayed the grass surroundingpond B, there were a lot of fish dying.

Based on the statement above, write one inference. ________________________________________________ ________________________________________________

c) guided inference

Most f i sh in po nd B d ie because the water i s p o l lu ted .

s t imul i

Note: The ans wer g iven shou ld be re la ted to s t imu lusprov ided in ques t ion .


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X Y

Observation :

1. The amount of plant in container Y is more than thenumber of plant in container X.

2. The size of plant in container X is bigger than the size ofplant in container Y.

d) State additional observation to test the inference validity

(a) Based on the observation chosen state two inferences


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(a) Based on the observation chosen, state two inferencesabout the difference between the plants in container Xand Y.

Observation :..

.

Inference 1 :...

..

Inference 2 :.....

.

Size of plant in co ntainer X is b igg er

than th e s ize of plant in co ntainer Y

Plant in co ntainer X ob tained m ore

su nl igh t co m pare to plant in co ntainer Y.

Plan t in c on tainer X obta ined m ore

fert i l izer / w ater com pare to p lant in c on tainer Y.

Inference validity


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Inference validity

State another observation / additional observation to support thestated inference.

Example :

(b) Suggest another observation to support one of theinferences stated above.

Inference : .....

..

Observation : ....

..

Plant in co ntainer X ob tained m ore

su nl ig ht co m pare to plant in co ntainer Y.

Size of leave of plant in co ntainer X

is b igg er than th e s ize of leave of p lant in

c o nt ainer Y.


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* Relationship between variables

* The more/less(pattern)..TC.. themore/less (pattern) TM..

* (factual method)- Water and air caused iron to rust.- Water caused the bread to mould.

* As the ..TC.. more/less(pattern) the

TM..more/less (pattern) too.


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Criterion:-suggesting explaination about the relationship between

variables ( TC and TM )-suggesting explaination based on the principles of scienceor previous knowledge

-State an earlier conclusion based on inference

Note;- To f acili tate;

* ident ify TC and TM* relate the relat io ns hip betw een TC and TM

Keyword ;The more/less.the more/less. If .then..


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How to write?

Identify TC and TM

- observe the data pattern / trend

- used format given

The ___ TC the ___ TM

If ___ TC then ___ TM

or

Increase ordecrease


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Berat lilin / g 60 80 100 120 140Masa / minit 3 4 5 6 7

bekas logam TC

TMbekas logam

lilin pejal

cahaya matahari

sunlight

metal container

solid wax

weight of wax / g

melting time / minutes

The heavier the weight of w ax the lon ger the t im e needed for the wax to m el t


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(a)Write one hypothesis based on given statement.

2. State hypothesis based on given statement .

exam ple : The improper use of insecticide will causedamage to plant in long term.

The m ore impro per usage of insec t ic ide the mo re

damage wi l l happ en to p lan t in lon g te rm.


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State hypothesis based on investigation.Example :

A group of pupils conducted one investigation. Part ofthe report of the investigation is shown in the tablebelow.

5 10 15 20 25 30 35 40

10 20 30 40 50 60 70 80

Time taken to soakseedling (minutes)

Weight of seed ( gram )

(a) Write one hypothesis based on the investigation.

The long er the seeds are so aked, the heavier they

become .


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Criterion:

Write statement on meaning of data or collected information.

State the pattern from the collected information.

State the relationship between variables.

Making conclusion/summary base on collected data.

State the aim/purpose of investigation.


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Size of bread(cm 2)

The numbers offungus grown

25 5

36 17

49 29

c) What is the statement about numbers of mould grown on the bread if the size of bread is 49 cm 2 ?

The most.


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Size of bread(cm 2)

The numbers offungus grown

25 536 1749 29

d) Write the purpose (aim/objective) of theinvestigation?

To investigate the relationship between the sizeof bread and the numbers of fungus grown on thebread.


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To investigate the relationship between

(TC) and (TM ).

writing purpose / aim / objective ;


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T B


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Time Town Btemperature ( 0 C)

7 am 279 am 29

11 am321 pm 36

3 pm

315 pm 25

Predict thetemperature

for Town B at7 pm.

7 pm ????? Time


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Time Town B temperature

7.00 am 279.00 am 29

11.00 am 32

1.00 pm 363.00 pm 31

5.00 pm 25

+ 2 + 2

+ 2

+ 2

+ 2

+ 2

+ 3

+ 4

- 5

- 6

+ 27.00 pm - 718


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* increase/decrease uniformly/not uniformly

* increase then decrease

* increase uniformly then decrease notuniformly


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