Maths Practise Paper

Date given: 25/10/2010

1. 3
2. 4
3. 1
4. 4
5. 4
6. 2
7. 3
8. 3
9. 1
10. 3
11. 2
12. 3
13. 3
14. 2
15. 4
16. 3
17. 3
18. 3
19. 2
20. 1
21. 53, 200
22. 96
23. 113
24. 26
25. 5/8
26. 44
27. 12.48
28. 0.07
29. 0.138, 0.29, 2.051, 2.54
30. $16.00
31. 2 and 7/20
32. -
33. 76m
34. 5
35. -
36. 5/8
37. 8
38. 7.35pm

At 9pm, her watch should show 8.20pm.
So she should leave at 8.20 - 45 mins = 7.35pm

39) Draw Model
5 units -> 240 - 15
1 unit -> 225/5 =45
Mark-> 2units + 15
= 105

40)
Angle a + b = 90 - 42 = 48
48/3 = 16
angle b = 16 x 2
=32

41) Draw Model
Total bought = (3 x3) + 4 = 13 units
1 unit = 130/13
= 10
Shirt = 3 unit
= 10 x 3 = 30

42a) 4 tables 10 chairs
b)12 chairs
c) 22 chairs

43) Draw Model
3 unit -> 45
1 unit -> 45/3 = 15
2 units -> 15 x 2 = $30

44) there are 10 identical sides (2 breadths = 1 length)
1 side = 30/3
= 3
Area = 2 sides x 3 sides
= 6 x 9
= 54 cm^2

Mathematics Practice Paper

Distributed on 18/10/2010

Section A

1. 1
2. 3
3. 4
4. 2
5. 4
6. 2
7. 2
8. 3
9. 3
10. 4
11. 2
12. 1
13. 3
14. 4
15. 1

Section B

16) Seventy - four thousand and fifty-two (0m for missing hyphens and wrong spelling)

17) 10050 - 10000 = 50

18) 55 989

19) 5 and 1/3

20) 3/5

21) 90 - 50 = 40 degrees

22) 64019, 60149, 41906, 41069

23) 7, 42 (1m each, if more than 2 answers, minus 1m for every wrong answer)

24) 4 x 12 = 48

25) 2000/ 4 = 500

26) 5/12 + 11/12 = 1 and 1/3

27) 1/4 = 2/8; shade any 2 circles

28) (0m for not labeling angle, -1m for not labeling Z)

29) 3

30) 4 - 2 = 2, 8 + 2 = 10

31) Line must be drawn through the point R, angle at pt R should be between 89 - 91 degrees.

32) Line must be drawn through W

33) 3

34) 8 x 8 = 64

20 x 8 = 160

6 x 6 = 36

64 + 160 +36 = 260 cm^2

35) CD and IJ or EF and IJ

Section C

36) Factors of 36 = 1, 2, 3, 4, 6, 9

Factors of 54 = 1, 2, 3, 6, 9

Common Factors = 1, 2, 3, 6, 9

Thus, answer is 6298

37a) 45 + 90 + 90 + 45 = 270

b) home

38) [ Draw Model]

300 + 300 + 630 = 1230

1230/3 = 410

410 + 1230 = 1640 ml

39) 1 unit -> 12

4 units -> 48

48 - 28 = 20

20/48 = 5/12

40) [draw model]

1 - 1/7 = 6/7

4 units -> 24

1 unit-> 6

7 units -> 6 x 7 = 42

41) 42 - 16 = 26

26 x 3 = 78

78 + 42 + 16 = 136

b) 42 + 16 = 58

136 - 58 = 78

42) 6 x 4 = 24

24 x 6 = 144

144 = 12 x 12 cm

43) 405 / 5 = 81

81 = 9 x 9

9 x 5 = 45 ( Length of rect Y)

9 x 3 = 27 ( Breadth of rect Y)

Area = 45 x 27

= 1215 cm^2

Science Practice Paper

Distributed on 18/10/2010
Updated on 26/10/2010 with keywords highlighted in blue.


Section A

1. 4
2. 4
3. 2
4. 4
5. 3
6. 3
7. 2
8. 3
9. 1
10. 3
11. 3
12. 1
13. 2
14. 4
15. 4
16. 2
17. 1
18. 4
19. 1
20. 3 / 2
21. 3
22. 1
23. 2
24. 1
25. 3
26. 1
27. 4
28. 3
29. 1
30. 2

Section B

31a) Air can be compressed.
31b) I can poke some holes on the Styrofoam cup.


32a) False; b) False; c) True; d) Not


33a) Line should be drawn on the stroke above 100ml and labelled 120 ml.
33b) It will be the same.
33c) The plasticine has a definite volume, so the water level will be the same.


34ai) Skeletal System; ii) Muscular System
34bi) X; ii) The walls of the small intestine absorb the digested food through the blood vessels and is transported to all parts of the body.


35a) It has taken in water.
35b) It is the seed leaves/ seed coat.
35c) Yes. When plant began to grow its leaves, it can make its own food, so the plant will not die if Simon removed part X.


36a) Move the torch further away from the apple.
36b) Move the apple nearer to the wall.


37) Opaque: Aluminium foil, white board; Translucent: tracing paper, tissue paper; Transparent: clear glass, mineral water.


38a) Ali
38b) Light travels in a straight line.


39a) Triangle; Circle
39b) Metal, wood.


40a) Rises; Drop / Increases; Decreases
40b) Heat travelled from the hot water to the cold mug.


41a) It will become a magnet.
41b) Bring the nail to some paper clips and see if the clips are attracted to the nail.


42) Bad conductors: Plastic spoon, Ice cream stick; Good: Aluminium foil, sewing needle.


43a) 30
43b) The temperature of the coffee decreased from 75 to 45. / Drop to the same temperature as at 6 mins.
43c) It took 6 minutes.


44a) It is a thermometer.
44b) It is 39 degrees.
44c) It will not be accurate.


45a) Group D; b) Group E
45c) They reproduce by giving birth to their young.

English Language SA2 Mock Paper 2

Given on 18.10.2010 for PSLE Marking Days

Section A - G

Phrases to be highlighted are in blue

1. 3
2. 2
3. 3
4. 2
5. 1
6. 3 (Yesterday, Mr Wong)
7. 4 (now, she)
8. 2 (not to buy, people)
9. 4 (last friday, boys)
10. 3 (Peter and I)
11. 1 (girls, over there)
12. 4
13. 1
14. 3
15. 3
16. 4
17. 2
18. 4
19. C Mountains
20. A Different
21. F Tallest
22. D Only
23. B I
24. C My
25. D She
26. F Us
27. C Rang
28. E is ringing
29. A Ring
30. F Was ringing
31. Is the baby asleep or awake?
32. Both the thief and his accomplice were arrested yesterday.
33. You must open a letter before you can read it.

Section H

34. They were going home.

35. She heard a yelp from a bush near the pavement.

36. They applied some medicine to the puppy's wound (1m) and gave it a bowl of milk.

37. They knew from the address on the puppy's collar.

38. It means near/ close to/ within walking distance.

English Language SA2 Mock Paper 1

Given on 18.10.2010 for PSLE Marking Days

Section A to G

Phrases to be highlighted are in Blue

1. 2
2. 1
3. 3
4. 2
5. 4
6. 3 (Mary & I, We )
7. 2 (last night, my brother)
8. 4 (They, now)
9. 2 (last night)
10. 1 (cake)
11. 2 (girl, over there)
12. 2
13. 4
14. 1
15. 4
16. 2
17. 2
18. 4
19. B entertain
20. A around
21. F shoving
22. C noticed
23. A feed (to)
24. B feeds (everyday, he)
25. F feeding
26. C fed (last week) / E had fed
27. E that
28. D on
29. C however
30. A along
31. As Ali was very hungry, he gulped down a plate of noodles in one minute.
32. Both June and Lina play the violin well.
33. The boys continued to play soccer in the field although the rain was very heavy.

Section H

34. She was watering the plants.

35. She wanted to find out what the men were doing.

36. One of the residents in the neighbourhood had dengue fever.

37. They lay eggs in some empty containers that contained stagnant water.

38. It refers to the empty containers.

Remarks:

• For Q1-5, please check the dictionary for the meanings of all the words.
• The same goes for Section E, find out the meanings of the words.

Maths Practice Paper

Done on: 8th Oct 2010

Distributed Back: 18th Oct 2010

Section A

1. (3)
2. (2)
3. (4)
4. (1)
5. (2)
6. (3)
7. (3) [Draw out the times, the answer will be clear]
8. (1) [Find angle PSV = 90- 37. Since TSVU is a square, angle a = 90 - angle PSV = 37]
9. (3)
10. (1)
11. (2) [Finding smallest possible sum of the 2 numbers means the lowest possible number for rounding up. For 800, it will be 750; and for 400, it will be 350. Thus, the sum will be 1100. ]
12. (1) [Convert all the fractions in the question to decimals first.]
13. (2)
14. (4)
15. (2)

Section B

16) A= 8345, B = 8210

17) 73, 800

18) 86 Mangoes

19) 11/42 [ 1 - 4/7 - 1/6 = 42/42 - 24/42 - 7/42]

20) 1/2

21a) QR/QZ

21b) SR

22) Restaurant

23) 0.545, 0.54, 0.455, 0.045

24) 1.46

25) 48

26) 80 marks

27) 150 pupils

28) DE = 2.25, EF = 3.5

29) 1|1/4 or 1.25 [3/4 + 0.5 = 0.75 +0.5]

30) $33.00 [Draw models]

31) 18 days [For such questions, it is always round up. If you round down, it means they did not save enough]

32a) 12 July

32b) 8.45pm / 20 45

33) 92cm^2 [total length is 23 cm, note overlapped part]

34) 925cm^2

Section C

35a) Money at first = (27 x 8) + 9

= $225.00

35b) Boxes at sales = $225 / 6

~ 37

More boxes = 37 - 27

= 10

36) Duck Eggs on Friday = 166 - 78

= 88

Total eggs on Fri = 166 + 88

= 254

Eggs sold on Sat = 254/2

= 127

Total eggs sold = 254 + 127

= 381

37) Each set, 1 cup + 1 plate = $7 + ($7-3)

= $11

Total sets bought = $264/ $11

= 24

Amount more = $24 x $3

= $72

38) Daisies = 1/5 x 240

= 48

Daisies removed = 1/3 x 48

= 16

Tulips = 3/8 x 240

= 90

Tulips removed = 5/6 x 90

= 75

Flowers left = 240 - 16 - 75

= 149

39) Draw Model, base unite 10. Yellow will take 4 units, purple will take 5, leaving only 1 unit for purple.

After drawing model, you will realise that

4 units -> 60

10 units -> 150

40) Total spent on crayons = $ $5.35 x 2

= $10. 70

Total spent on drawing books = $1.70 x 5

= $8.50

Amount Saved = ($10.70 + $8.50) - $16.99

= $2.21

41a) 19 05 - 13 35 = 5h 30mins

b) 21 00 - 19 05 = 1hr 55mins

42) List down all the factors for 54 & 102. Since it was given that W is a square, we must identify the common factor as the breadth of W = 6.

From this, we conclude that

Length of V = 102/6

= 17 cm

Breadth of V = 54/6

= 9 cm

Difference in Area = Area of V - Area of W

= (17 x 9 ) - ( 6 x 6 )

= 117 cm^2

Remarks:

• Many of you could not finish the paper within the 1hr 45 mins. Although the timing was not followed strictly, it is still crucial to manage your time properly.
• Do not be careless, read the question carefully and be sure to know what they are asking for. Highlight if need be.
• If you are unsure where to start, list down the information given as working.
• Ascending is from smallest to biggest, descending is from biggest to smallest.

Townsville CA 2008

Done on: 15 Sep 2010

Section C:
Q19) 1123 rubber bands

7406-668=6738

6738/6=1123

Q20) 135 marbles
180/4=45
marbles left = 45 x 3 = 135

Q21) $78.00
156/4=39
39 x 2 =78

Q22) 30
72/3 = 24
72-24-18 = 30

Q23) $1.00
5.65 x 4 =22.60
50-22.60 = 27.40
28.40 - 27.40 = 1.00

Q24) 8m
9.6/6 = 1.6
1.6 x 5 =8

Q25) 8 bears
if she buys 10 bears, she'll spend (10 x 10) + (3 x5) = 115
If she buys 9 bears, she'll spend (9 x 10) + (4 x 5) = 110
If she buys 8 bears, she'll spend (8 x 10) + (5 x 5) = 105

Q26) 10 years old
38-8 = 30
30/3 = 10

Remarks:

• Q20) 1 mark is deducted if you did not label the model "ming ming".
• For Q25, I deducted marks for those with only 1 line of working. There must be minimum 2 lines to show understanding; I also accepted other methods provided that you show understanding of the question.

Learning Questions

1)May I know what is the meaning of "independent variable" & "dependant variable" ?

An independent variable is a factor that can be varied or manipulated in an experiment (e.g. time, temperature, concentration, etc). It is usually what will affect the dependent variable.

In your science experiments, you will always be controlling the independent variable and measuring the effect it has on the dependent variable.

For example, if you want to find out if plants require water to grow, the factors you will control is the amount of water given each day. So water will be the independent variable. The dependent variable will then be the observed amount of growth of the plant.

2)What is the difference between the properties & the charateristics of something?

According to the Longman Dictionary,
Characteristics refer to a quality or feature of someone/something that is typical of them and is easy to recognise.

Properties refer to a quality that belongs naturally to something. [In this case, it might be something that you cannot see, eg healing power]

3)When we say that something has definite volume, does it means that it cannot be compressed?

At your level, this is what you know. As long as an object has definite volume (liquids/solids), it cannot be compressed. This leaves us with only gases (compressable).

Composition Mistakes

Logic:

1. The clouds were blocking the sun intensive rays, leaving the sky as fine as it could ever be. How can it be fine if you have clouds blocking the sun?
2. One evening, as ominous clouds started to form, I was doing my school homework. There is no link between clouds forming and doing homework!
3. Many of you wrote that the pickpocket/burglars were sent to jail by the police. Logically speaking, the criminals were sent to the police station first.

Sentence phrasing
1. Tom took out his luggage slowly out of the taxi’s boot. (X)
[Tom took his luggage out of the taxi’s boot slowly. ]

2. I and my mother.... (X)
[My mother and I....]

3. I quickly called the police... (X)
[I called the police immediately..]

4. One of the policeman...(X)
[One of the policemen...]

5. From under the sofa, I took out.... [X]
[I took out... from under the sofa. ]

6. ...nearby cafe... (X)
[...cafe nearby...]


Vocabulary usage & spelling

1. Scorching sun
2. Immediately
3. hesitant
4. Thief
5. Retrieve
6. Jewelleries
7. Stretched! (Many spelt streched.)
8. thought/ taught
9. maintenance
10. malfunction
11. traumatizing
12. explanation

Remarks:

1. Double paragraph strokes (//) is for me to tell you to start a new paragraph, not for you to use it freely while writing.
2. Counting numbers; some of you got carried away and wrote the numbers at the end of the paragraph. DO NOT do it in the exams.
3. Paragraphs are still too long, remember, try to have one main point in each paragraph.
4. The same goes for sentences, do not try to squeeze all your details into one sentence.
5. Do not miss out essential information from the pictures. Many of you can describe very vividly about the weather (which was not featured in the pictures) but I still have a handful of you missing the gist of the story completely!
6. Balance between what is too much and too little: Do I need to know who brought what into the airport? Do I need to know what was everyone wearing on that day? Go straight to the point, what should the main story be about? This is especially so for the picture writing component, if the picture shows that it is the girl that tripped the boy, then do not write otherwise!
7. Tenses! Know when to use your past tense and past perfect!
8. ***Ending your story: One good way to end your story is to write down your lesson learnt, what you/ the protagonist gained from the whole event.

Last words;

PLAN & RE-READ YOUR STORY.

Plan before you write. Know what is the gist of your story, identify the main points. After you are done with your composition, read through it again. Does it make sense? Have you used the correct tenses? Check your spelling and punctuation!

Do not write long prose for the sake of hitting your 300 word target. The minimum word count is 120 which I think most of you can do it. But you tend to write and describe too much unnecessary details till the point where you missed the story completely.

What to study for Science SA2 2010

Townsville Primary School
Table of Specifications for SA2
Science 2010
Primary Four

1. Systems

• What is a system?
• Non-living things
• Living things

2. Human Systems

• Your amazing body
• Systems in the body
• One for all, all for one (pg 14-15: know how the systems work together and are interdependent on each other)
• The digestive System
• Journey of the food you eat

3. Plant Systems

• Plants & Their Parts
• Plants are systems

4. Theme : Energy

• Light & shadows
• Heat & temperature
• Effects of heat

5. Cycles

• What is matter?
• 3 states of matter

6. P3 work

• Materials (Diversity)
• Magnets ( Interactions)

7. Process Skills Qns

Please note that the duration for Booklet A and B is 1 hr 30 min

Remarks: Do not just limit yourself to these content. Read beyond the concepts.

Townsville Mathematics Mock Paper 2010

Answers to Mathematics Mock Paper (8/10/2010)



Answers are awarded 2 marks each; marks will be awarded if relevant workings are shown.



Section B

Q18) 20, 000 / 35, 000

Q19) 0.6

Q20) 9.08

Q21) 17

Q22) 53 Deg

Q23) H

Q24) 2(5/12)

Q25) 2(1/4)

Q26) 2 or (8/4)

Q27) Tuesday

Q28) 96 [M1=32+28+36]

Q29) 44 [M1 = 11 x 2 x 2]

Q30) 0.55 [M1 = 0.3 + 0.25]

Q31) 10 35

Q32) 600 [m1 = 1800/3]

Q33) 15.60 [M1 = (2.10 +1.50) x 2 & 2.10 x4]

Q34) 4 [M1 = 28-8]



Section C [All units should be given and accurate]

Q35) $65

Q36) 1.75m

Q37a) 12 packs

b) 3 packs

Q38) 39 stickers [method marks will not be awarded if other methods are used instead of model]

Q39a) 8cm

b) 86cm

Q40) $380

Q41a) $315

b) $840 [method marks will not be awarded if other methods are used instead of model]

Q42) 540 cm²

Remarks:

• For MCQ, note that for question 12, I accept both options 1 and 2.
• (Time) 24hr format is given as 10 35 or 23 15. If it is in the 12 hour format, it will be 10.35am or 11.15pm
• Please read your questions carefully.
• Common practise is to always leave your fractions in simplest form unless stated otherwise.
• Remember my rules on models. Use a ruler & label all information!

Mistakes were commonly found in [MCQ] Q15, 16, 17.

• Q15: Product of 2 number = 108, one number is 4, the solution should be 108/4 = 27
• Q16: Given that it is 08 00 in Singapore and 02 00 in France, it meant that we are 6 hrs ahead of France. So, if the time in singapore is 15 00, France should be 6 hours slower: 15 00 - 6hrs = 09 00.
• Q17: clockwise = direction of the clock!

7th Oct 2010: P4 Science Practice Paper

Updated on: 11/10/2010
Townsville Primary School Practice Paper 1 (P4) - Given on 7th Oct 2010
Booklet B

Q31) a: (i) Solid
(ii) Liquid
(iii) Gas
b: Any Liquid (as long as it is matter)

Q32) a: The stone takes up space/ it has volume. [I do not accept mass]
b: 10 ml
c: 45 ml [0.5 marks will be deducted if units are not stated]

Q33) a: Noel is wrong. Sound does not have mass OR volume OR occupy space.
b: Any solid

Q34) a: The water is cold.
b: The water is hot.
C: The hot water heats the air in the bottle (0.5m) and causes the air to expand (0.5m).

Q35) a: Ronald added ice/ put it in the freezer. Must add something cold, not blowing/ stirring etc.
B: The water has become ice/ frozen/ changing to ice.
C: He heated the water/ added hot water. The water must gain heat.

Q36) a: Vase Y is made up if a material that does not allow light to pass through it while Vase Z is made of a material that allows some light to pass through it. [Must compare both vases, 0m if only vase Z is mention, 0.5m if only vase Y is mentioned.]
B: Vase Y

Q37) a: Move the wooden cube nearer to the screen/ the screen nearer to the cube/ move the light further away from the cube.
B: Glass

Q38) a: Plant Y
B: The plant has sunlight to make food (0.5m) because light can pass through the box (0.5m). [Both points are important!]
C: The material/ kind/ type of box.

Q39) a: Part A – Flower, Part B – Leaf
B: Part C holds the plant upright while Part D holds the plant firmly to the ground OR
Part C transports water to all parts of the plant while Part D absorbs water from the soil.
[Must compare according to similar function]
c: Part A ensures the continual reproduction of the plant OR Part B helps the plant make food.

[Both answers are accepted as long as the important function is listed. Answer in the negative will not be accept. For Eg, If part A is missing…. ]

Q40) a: Plant A does not have much roots to absorb water and nutrients for the plant to grow well. [Must show cause & effect]
B: The roots are not able to hold the plant firmly/well to the ground. [without firmly/well, 1m will be deducted]

Q41) a: Mouth: The saliva has digestive juices to start digestion
Gullet: The muscle help pushes the food from the mouth into the stomach
B: Small intestines: Digestion of food continues and is completed here OR
Digested food is absorbed into the body

Q42) a: Stomach
B: More digestive juices are added/ Digestion of food.

Q43) a: Material A or B, Please state relevant characteristics.
B: No, it is not flexible/ cannot be bent.

Q44) a: D
B: Any mammal that cannot fly and has hair on its body (except Bat).


Remarks:
Mistakes were generally on
Q34c: Students did not explain what causes the air to expand - the heat from the hot water,
Q35b: Qn was asking what happened to the water, [I do not accept the answer "The temperature has dropped to 0 deg". The temperature has in fact remained at 0 degrees.]
36a: Comparison was not made,
37a: Concept of making shadows was unclear - For sharper images, light source has to be further away from object, but the object has to be nearer to the screen,
39b: Comparison of functions does not match, For eg: Part C holds the plant upright while Part D adsorbs water.