4 Question Approach For Science Year 5

DESIGNING FAIR TEST The Problem: (IV) (DV) What is the relationship between ....... And ....... (IV)

(IV) Which ....... Is better to (DV) ...... (IV) (DV) Do the ........ can made the ........

What to change

-

Independent Variable

-

Dependent Variable

(How to change ?) What to observe

(How to measure the observation ?) What to keep the same

Constant

FOUR QUESTION APPROACH

( 4QA )

The Growth of The Mould On A Slice of Bread

Q1 What materials do you need? Slices of bread Water Dropper Places Humidity Temperature

Q2 What do you want to observe? The formation of mould / fungus Area covered Colour / type Rate of growth Odour / smell

Q3 What do you need to change to affect the result ? Bread

:

Water : Places : Humidity : Temperature

Type of bread (brand), thickness, size, Type of water, amount, way of Location of experiment Percentage of : Degree of

Q4 How do you measure the change? ( formation of fungus ) Area Colour Rate of Smell

: : : :

Centimetre square / proportion Brown, green, yellow, .... Faster/slower, by day/hours Exist or not Fungus formed or not

Designing A Fair Test Things to Change (Q3)

Things to Measure (Q4)

Type of bread / brand Thickness of bread Type of water Type of places Percentage of humidity Degree of temperature

Area

- cm square, proportion, Colour - Name the colour, Rate of - Faster/ slower, number of days Smell - Kind of, Fungus formed / not

Designing A Fair Test (1) My Problem Which water make fungus appear faster ? Type of water

Rain

Drain

River

Number of day ( fungus appear ) Things to keep the same: Type/size of bread, amount of water, place/humidity/ temperature, ect.

Lake

Designing A Fair Test (2) My Problem Which places easier for fungus to grow ? Location

Cabinet

Cupboard

On table

Fridge

Portion of fungus Things to keep the same: Type of bread, size of bread, time taken,

Heating Liquid

Q1 What materials do you need? 60

Water / liquid Beaker Thermometer Tripod Burner Location / place Stopwatch

45

15

30

Q2 What do you want to observe? Water/liquid Temperature Time Taken

Q3 What do you need to change to affect the result? Water/liquid Beaker Thermometer Tripod Burner Stopwatch Place

Type of water/liquid // Volume Size/volume/type Brand/type Height Size of the flame Heating time Location

Q4 How do you measure the change? Temperature: Water/liquid temperature every ...... minutes Time Taken: Time taken to boil / to reach at a certain degree

Designing A Fair Test Things to Change (Q3) Type of water/liquid Volume of water Heating time Size/volume/type of beaker Height of tripod Size of the flame Location of the experiment

Things to Measure (Q4) Water/liquid temperature Time taken to ......

Designing A Fair Test (1) My Problem Do the heating time affect the temperature of the water ? Heating Time

0

5

10

15

Water Temperature Things to keep the same: Volume of water, height of tripod, size of beaker, size of flame, type of water, location ect.

Designing A Fair Test (2) My Problem Which liquid will boiled faster?

Type of Liquid

A

B

C

C

Time Taken to Boil Things to keep the same: The Volume of the liquid, size of the beaker, size of the flame, location, height of the tripod, ect.

Designing A Fair Test (3) My Problem Do the different amount of water boiled at the different time ?

Things to keep the same:

Workgroup Task By using 4QA strategy, design a fair test. Follow up working on your Mind Map.