Class photo-taking on 12 Aug 2015

Please note that there is class photo-taking tomorrow. Pupils are to turn up in school inform tomorrow. For prefects, please wear your tie and badge

If there is PE lesson tomorrow, please place your PE tshirt in your bag.

Homework on 11 Aug 2015

(1) Math revision Paper T3R2 (Complete sections B and C)
2) Science WS on Fair test
3) Parents pls sign on Math Review 5

Things to note

Fair test
Independent variable is the factor or variable that we change in an experiment to test if they can affect the results of the experiment.

Dependent variable is the variable that we usually measure or it is the result that we look at the end of the experiment.

Usually for fair test, we will only change one independent variable. All other variables should remain the same.

For example of the aim of the experiment is to test if the type of soil affect the growth of the plant.

The only factor that changes (independent variable) is the type of soil. All other factors like amount of soil, type of plant etc must remain the same.
The results that we measure in both experiments is the growth of the plant and this is known as the dependent variable.

Data analysis (Graphs)

Please study the 2 axes of the graph carefully. Do draw dotted straight lines to read off the values as represented by the graphs. Remember to state units when necessary.

Answers for Fair Test WS
1) Presence of water(independent variable) and if seeds will germinate (dependent variable)
2) Amount of light (independent variable) and survival of fishes (dependent variable)
3) Change in temperature (independent variable) and rate of evaporation (dependent variable)
4) Presence of fertiliser (independent variable) and growth of flowering plant (dependent variable)
5) Material of parachute (independent variable) and distance the parachut takes to fall to the ground(dependent variable)
6) Presence of sunlight (independent variable) and growth of plant( dependent variable)
7) Surface area of leaves (independent variable) and amount of oxygen given out during photosynthesis (dependent variable)
8) Materials (independent variable) and Amount of light that passes through (dependent variable)
9) Type of soil (independent variable) and growth of plant (dependent variable)
10) Change in weights (independent variable) and how much an elastic band stretches
11) Height of ramp is the independent variable and the distance travelled by the car (independent variable). Only height of ramp can change.

Variable 1 and 2: Any 2 as stated below-
Length of ramp, material of ramp, size of toy car, type of toy car, material of toy car.

12) Variables that must be kept constant: Thickness of filter, material of filter, type of water plant

Independent variable for this experiment is the colour of filter and dependent variable is the number of bubbles given out.

13) *do not do the question on dissolved carbon dioxide

14) Variables that should be kept constant: Amount of fertiliser and type of soil.

National Day celebrations

Dear all,

Here's wishing you a happy National Day. Do remember to revise for your upcoming Science Process Skills test (Data Graph and Fair Test). For Fair test, do go through the worksheets given in Semester 1.

Here are some pictures on today's celebration.

Homework on 5 August 2015

1) Corrections for Decimals 2

Dear parents, please sign it.

2) 3 Science WS- 2 Mental Science on Light and 1 Review Exercise on Light

All work to be handed in on Tuesday (including Decimals 2).

Things to note:

Answers for Science WS on Graphs (Process Skills)

Question 8. 

(a) The temperature of the water is decreasing.

(b) Ah Seng added some tap water/ cold water or ice into boiling water.

Question 9:

(i) 6g per m2

(ii) When more than 6g of fertiliser was added for every m2, the weight of the vegetables collected decreased.

Question 10:

(a) Curve X. The mass of the seed leaf decreases as the stored food is used up for germination.

(b) The seed will still grow as the seed leaf would provide food for the germination of seed.

(c) The seedling made its own food as from Day 8 onwards as the seedling would have developed green leaves.

Here is a picture on the pupils constructing Lego- Building SG:

Here's wishing all of you a Happy National Day and see you all tomorrow!

Homework on 4 Aug 2015

1) EL revision paper T3R3

Things to note:

1)The pupils will be taking a Math Performance task this week. They have been informed since Monday to revise the following topics, Angles, Time, Perpendicular and Parallel Lines and Area and Perimeter. There is no weighting for this test.
2) Today, the pupils were given 3 quizzes on Math (Fractions and Decimals).

Commonly made errors:
(I) Did not read questions properly especially questions that requested them to round off their answers to nearest tenths, hundredths or etc. Thus the pupils detived the correct answers based on algorithm but they did not round off their answers.
(II) Some pupils are not able to convert "words" to decimals accurately. For example, 12 tenths= 1.2
(III) Some pupils are having problems understanding word problems involving fractions. As explained to them, they must decide if the question is purely a normal "measurement" question or "fraction of a set" question.

Homework on 3 August 2015

1) Math review 5( for pupils who have not completed it in class)
2) EL learning sheet ls 1.1 and 1.2 (What is a tsunami?)
3) Parents, pls sign Decimals (1).

Math Olympiad training on 3 Aug 2015

Pupils in Math Olympiad enrichment, please take note that there is Math Olympiad training tomorrow from 2p.m. to 4 p.m.