science sharing lower block (p4) - moe circular/2015 t… · lsc technique in answering exam-based...
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Science Sharing
Lower Block (P4)
14 March 2015
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Content of Presentation
Primary Science Curriculum
IBL (Inquiry based learning) approach in teaching of Science concepts
Common errors in answering OE questions
LSC technique in answering exam-based questions
How to write – structures and styles
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Science Teachers
• Primary 4
4A – Mdm Esther Chew
4B – Mdm Esther Chew
4C – Mr Peter Ho
4D – Mr Lim Boon Bing
4E – Mdm Nancy Tan
4F – Mdm Chua Kiat Eng
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Primary Science Curriculum
Topics organised across
•5 themes: Diversity, Cycles, Systems,
Energy, Interactions
•2 blocks: Lower block (P3-P4), Upper block
(P5-P6)
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P4 Science Topics
• Cycles
– Life Cycles of plants and animals
– Matter, states of matter
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P4 Science Topics
• Energy
– Heat
– Light
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P4 Science Topics
• Revision on P3 topics at SA exams
• Diversity of living things and materials
• Human Digestive system
• Plant system (basic)
• Interactions – Magnets
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Science Curriculum
Framework
The curriculum
seeks to nurture
the student as an
inquirer.
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The Inquiry Approach
• Encourages pupils to
derive the science
concepts through:
– Questioning
– Investigation
– Observation
– Deduction
• Knowledge is then
reinforced through
application
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IBL Package
• A set of lesson plans
and activities
designed by CPDD to
teach pupils Science
through the inquiry
approach.
• Used in conjunction
with the activity book
from publisher.
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Skills
• Observing
• Comparing
• Classifying
• Using apparatus
and equipment
• Communicating
• Inferring
• Predicting
• Analysing
• Generating
possibilities
• Evaluating
• Formulating
hypothesis
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Skills
• This is the skill of using our senses to gather information about objects or events (includes use of instruments)
Observing
• Identifying similarities and differences between two or more objects, concepts or processes
Comparing
• Grouping objects or events based on common characteristics
Classifying
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Skills
• Interpret and explain observations or pieces of data or information Inferring
• Identify the parts of objects, information or processes, patterns and relationships between these parts
Analysing
•Transmitting and receiving information presented in various forms – verbal, pictorial, tabular or graphical
Communicating
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Skills
• Assess the likelihood of an outcome based on prior knowledge of how things usually turn out
Predicting
•Exploring all the alternatives, possibilities and choices beyond the obvious or preferred
Generating Possibilities
•Assessing the reasonableness, accuracy and quality of information, processes and ideas. Includes assessing quality and feasibility of objects
Evaluating
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Skills
• Knowing the functions and limitations of various apparatus and developing the ability to select and handle them appropriately for various tasks
Using apparatus
and equipment
•Making a general explanation for a related set of observations or events (extension of inferring)
Formulating Hypothesis
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Common errors in
OE questions
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Common errors in
OE questions
• Incomplete answers
• Fail to use appropriate scientific
words / equivalent in answers
• Did not use comparative words when
needed
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Incomplete answers
• What is one difference between the life cycle
of a chicken and a butterfly?
– The chicken has a 3-stage life cycle.
(incomplete: What about the butterfly?)
Suggested answer:
The chicken has a 3-stage life cycle while the butterfly
has a 4-stage life cycle.
The young of the chicken looks like the adult while the
young of the butterfly does not look like the adult.
Comparing
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Incomplete answers
• Why does magnet B appear to float on magnet C?
- Because the two poles are like poles. (incomplete: why would like poles cause the ‘floating’?)
Suggested answer:
The like poles of the two magnets are
facing each other and resulted in
repulsion.
Inferring
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Did not use
appropriate words
• What is one difference between the life cycle of a chicken and a butterfly?
– The young of the butterfly looks like a worm, while the young of the chicken looks like the mother.
Errors:
Larva is not the same as a worm.
The young chick looks like the male chicken too.
Suggested answer:
The young of the chicken looks like the adult while the young of the butterfly does not look like the adult.
Comparing
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Did not use
comparative words • The table shows the number of clips which two
magnets can pick. Which is the stronger magnet and why?
– B is the stronger magnet because it can pick up 20 clips.
Stating 20 clips does not indicate B is stronger.
Suggested answer:
B is stronger because it can pick up more clips than A.
Magnet No. of clips attracted
A 10
B 20
Inferring
& Communicating
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LSC Technique
the strategy in answering OE
questions
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LSC Technique
L : Link - the appropriate concepts to answer the
question
S : Specific - Specific concepts, topics, key words.
C: Comparing - using comparative & appropriate
scientific language/vocabulary
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Step What you should do
1 Read and understand the question.
2 Identify the specific topic/concepts related
to the question.
3 Link/Apply the appropriate concepts to
answer the question.
4 Craft answer using specific key words
related to the concept/topic.
5 Refine answer using comparative sentence
structures and adjectives.
LSC Technique
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31 Damian conducted an experiment as shown below.
Set-up 1 Set-up 2 Set-up 3 Set-up 4
hole
frog
fly
water
Applying LSC
Question
• Damian conducted an experiment
as shown below. In which set-up
will the frog stay alive for the
longest time? Give a reason for
your answer.
Apply
• Link (to the topic)
– Topic: what living things need to survive
• Specific words
– Water, air, food, survive
• Compare
– There are 4 setups so comparison is required.
The frog will stay alive the longest in set-up 4.
Only set-up 4 has air, food and water for the
frog to survive the longest while the other
set-ups are short of some of the conditions.
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Applying LSC David pushed an inverted empty plastic cup in
a container of water. The diagram below
shows the cup in the container of water. While
the cup was in the water, David pierced a hole
at the base of the cup.
(a) Describe what she would observe after
that.
(b) Give a reason for your answer.
Apply
• Link (to the topic)
– Topic:
Matter occupies space
• Specific words
– Air, water, occupies
space, volume,
escapes
• Compare
– Not applicable because:
– We are not comparing
2 or more objects.
– We are not comparing
‘before’ and ‘after’
scenario.
(a) David would observe air bubbles coming out of
the hole.
(b) Air in the cup escapes through the hole. Water
from the container enters the cup to occupy the
space left by the air.
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How to write: structures and
style
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Common question stems
1. State one difference/similarity between
‘X’ and ‘Y’.
2. What is the relationship between……
3. What is the aim of the experiment…….
4. Give a reason…..
• Each type has its answering ‘style’.
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1. State difference/similarity
Style
• Difference:
– ‘A’ has _______ while ‘B’
has ______
• Similarity:
– Both ‘A’ and ‘B’ has
___________
Example
The frog has a 3-stage life cycle
while the mosquito has a 4-stage
life cycle.
Both the frog and the mosquito
life cycles start with an egg stage.
Comparing &
Communicating
Study the two life cycles below.
State one difference and one similarity between
the two life cycles.
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2. What is the relationship…
Style
• As/When __(A)___
increases/decreases,
____(B)____
increases/decreases.
Example
Time (A) Height of plant
(B)
Day 6 10 cm
Day 8 15 cm
Day 10 20 cm
Day 12 25 cm
As the height of the seedling
increases, the mass of the seed
leaves decreases.
The graph below shows how the mass of the
seed leaves of a green bean seedling
changed as the seedling grew.
What is the relationship between the mass
of seed leaves and the height of the
seedling?
Height of seedling (cm)
Mass of seed leaves (g)
Analysing &
Communicating
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3. What is the aim of the
experiment…
Style
• The aim is to investigate
how ___(A)________
affects __(B)__________
Example
Pot Amount of
water given per
day
Average height
of seedlings
P 20 ml
10 cm
Q 40 ml
14 cm
R 60 ml
20 cm
S 80 ml
23 cm
T 100 ml
25 cm
The aim is to investigate how the
amount of water given per day
affects the average height of
seedlings.
What is the
aim of the
experiment?
(A) (B)
Evaluating &
Communicating
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4. Give a reason……..
Example
Give a reason why the water flows
more easily in the second beaker.
The water flows more easily in
the second beaker. This shows
that there is space in the beaker
for the water to enter. This is
because some air in the beaker
has escaped through the tube.
Beaker 1 Beaker 2
Evaluating &
Communicating
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Now it’s your turn to practise…
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How You Can Support
• Encourage your child to read widely to improve
language skills and general knowledge.
• Practice reasoning skills via the question ‘why’.
• Encourage your child to describe/compare
events and objects using specific
adjectives/verbs and comparative sentence
structures.
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Thank you…
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Q & A