Learning Issues
Area & Perimeter
of Composite Figures
Assumption: Pupils are able to solve (knowledge qns?) discrete routine questions. Higher order qns involving rearrangement of shapes/lines in composite fig requires more scaffolding (be more specific about the challenges)
non routine, multiple solutions to a single problem, non-linear prescription as a pedagogy
Analysis:
Pupils may think that they will have to find the areas of the different figures, rather than rearranging the figures.
Pupils launch directly into the procedural aspect of problem solving without applying (1) reasoning (2) thinking, e.g. identifying patterns.
Pupils do not venture into alternative methods of solving as they are too used to using a single method. (fixation caused by procedural teaching)
Conditions of
Proposed Solution:
Understanding beyond formula (reasoning)
Developing habits in pupils not to jump into procedural approach. (Metacognition - discuss, think aloud & reflect)
Need for pupils to articulate their thinking and how they solve the problems.
Sharing of the process allows them to learn and discover the different ways of solving (Metacognition - discuss, think aloud & reflect).
Spatial visualization skills:
Observation in pupils who are able solve:
1. Ability of pupils to simplify the question.
2. Ability of the pupils to visualize the different shapes
Role of ICT
How shapes interact through the use of ICT, but at the same time allowing them a platform to also pose questions, craft questions and share their reasoning.
Circles
short cut using technology (GSP)
allows you to have various diagrams
students focus on analyzing data rather than calculations
discover relat
Division and Multiplication
Assumption:
Analysis:
Conditions of Proposed Solution:
Fuhua: Percentage
Pupils view a percentage as a number rather than part of an amount (whole)
conceptualization issue
Conditions of Proposed Solution:
Lower ability: tackle conceptual understanding
Foundation kiids
Subtopic
issue in solving word problems involving discount, GST, interest and respective BASE to use.
conceptualization issue
Conditions of Proposed Solution:
Word problem using conventional base. Transitional activities: tightly contextualized, highly relevant to students' daily lives/experiences (authentic learning)
Assumption: procedural knowledge is not an issue
Going back to fundamentals: concepts (abstract) embedded in contextualized activities linked to students' experiences
Role play: Shopping with the aim of getting the best discount with a designated amount of money
Foundational students
Meaning making of percentages
Repeated practice will potentially lead to improvement
Application of Percentage in real life
Conditions of Proposed Solution:
Understanding terminologies such as discount/GST and relationship to content of maths lesson
Use of multiple situations
Ability to transfer knowledge exhibits understanding
Case base pedagogy
multiple small scenarios/ iteration of knowledge to help students see patterns (easy-->difficult conversion of bases)
Identifying the BASE to use
Contextualizing the question
When the base is non-conventional (eg: 5/7 % of something), students get confused. See numerical quantity of the % at its face value
Percentage is a system for comparison using the baseline of 100
"OF" (indicate multiplication) the "cost price"
"OF" implies a derivation from something
Lesson Implementation (6th Aug)
Lesson Objective
Examine their thought processes as a class
Cyclical approach
Increasing level of difficulty
Word problem. Varying level.
Part whole relationship.
Lesson Progress
Compare and contrast their problem solving process
Platform:Mimio (in house platform)
Restrictive because one page at a time. Varying handwriting size and also challenging to write with stylus
2-3 groups used model to solve. Others used percentage
Deconstruction shown in their working
Feedback
Twiddler
Online whiteboard space
Teacher explored and find it challenging
"Careless Mistakes"
Computational error
Misread question
Transfer error (from questions)
Conceptual error
Beacon :Decimals (P4)
Challenges
Unable to recognize the place value of tenths, hundredths etc.
Unable to see decimals relating to fractions
Concept of place values
Concept of tenths and hundredths
Relative value
Proposed solution: audio heuristics
Pupils launch directly into the procedural aspect of problem solving without applying (1) reasoning (2) thinking, e.g. identifying patterns.
Hinders their ability to tackle non routine questions
Application of Decimals in real life
Tools to be used in teaching
IWB flipchart
Applets
SSM resources
screencast for voice up
class blog
different representations
use cubes, coins
Proposed solution
Tapping on prior knowledge
Money
Challenges: syllabus order.
Help them understand place values.
How to link one to tenths?
Linking money to decimals
Challenges: form/structure is similar but underlying concept is different.
Both money and decimal's numeration system includes base 10.
Broaden the decimals, approx
How to anchoring of the topic--
How is it connected to decimals?
Linking to Fraction
Use concept of fraction as bridge to representation in decimals (parts vs whole; equivalence)
Number line
to give them a sense of a quantity
Using a benchmark to trigger students' reasoning (more/less)
making use of the prior knowledge of the mathematical words- concrete, picttorial,e.g. 7 tenths, 7/10, place values
Which number is bigger, 7/10 or 0.75? in the number line/class blog
Students' understanding of mathematical thinking/reasoning/depth in conception more than mathematical representation
Learning reveals itself through actions. Dependent on experiential learning (prior knowledge).
leverage on students' prior knowledge (eg: fraction) to help students best relate to the topic of interest
Help students understanding the importance of decimals in their lives
Rationale for variation within the numerical system: we need smaller denominations when we use money
Direct instructions
teacher-directed.
room for student practice in differentiated instructions. teacher-modelling, teacher as a facilitator.
give cyclical practice opportunities (repeated practice of sense making) to help them understand the concept.
modelling and telling-->student practice; teachers as facilitator, teacher gives feedback--> consolidate as a class
Problem based learning
Deconstructive activities
Rationale: Able to tap and build on prior knowledge
Teacher scaffolding
Inquiry based learning
Process and thinking- focused. Provide a platform for students to represent their thinking and discourse. After which, work with students through constructive feedback.
Duplicate CoP (among teachers) in the classroom with students
Experiential learning
Multiple representations
Cubes
Anchored by understanding of fundamentals such as number lines etc to diminish fear of progressing forward
Number Sense of the size of the quantity is very important
use of the number line
Then we lead to the 4 operations
To hear the articulation in the class blog about the no sense
What is common about this numbers? 0.7 or 0.75 ( pictorial/ % ) to hear the differnet representation.
To be able to tell us the next learning objective
pupils must know place values
pupils must know what are the jargons
pupils must know the literacy part- hundred/hundredths
pupils must know the comparison concept
PCK-Case base learning- pupils articulate how to work out and then come out with the generalisation- reason using the modality
PCK- Pedagogy
PCK-multiple representation
TPACK- no line in excel
1. no line ( manipulate on online) , 2. base 10 blocks ( pictorial or concrete=the same)
role of the technology for the idea formation i.e. it has to be articulated
need to document in the blogs- inquiry and no sensing based on the multiple cases/ qnsmaths rationalisation- to help in the deconstruction,
reciprocal teaching
PCK-maths rationalization with use of blogs
ZPD
Note: 2/3 periods-Teachers must explore the base 10 block and no line online-or to construct in excel. confirmation of blog design ( if we do reciprocal teaching)
no sense-place value
mulitple cases/ qns e.g. case 1: craft qns common cases and misconceptions then come up with generalisation
pupils must show no line / base 10- they must see and the growth of two number lines, no blocks
Pupils must be able to articulate 0.17 + 3 = 17 tenths + 3 ones i.e. 3 ones is bigger than 17tenths.
Pupil must do a print screen when they do the no line when they do the comparison during the comparison a+b, c-d etc--> have 2 no line
Suggested Lesson (Introduction to P4 Decimals)
Prior knowledge: Money sense.
Aim: How to bridge the gap linking it with
prior topic on fractions, tenth place value for
decimals.
Strategy: daily experiences relavant to students
Share on class blog.
Challenges (content knowledge): place value, not able to convert fraction to decimal. use prior knowledge on fractions to transit to decimals. confusion with relative size due to expression of fractions in words (eg: thousandths etc)
Pedagogical knowledge (existing):
Choa Chu Kang: Productive failure
Radical method-Teacher posed on the qns
another PCK
Design for failure to happen
after which, give students experience to play with different ideas to lead towards the correct conception
Suggested lesson plan
phases
conducted in 3 classes
HA, MA, LA
similar problem sums across the 3 classes
3 questions of increasing difficulty
first question to boost confidence
Concerns: time consuming
Each group 1 question
groups of 3
randomly assigned
use of ipad app for explanation
problem solving process will be recorded
IT platform (software) allows recording of students' scribbles, audio and thinking process
Concerns: pen and paper first? Every group given ipad with question embedded. write on ipad and explain. recorded on ipad simultaneously. later link to projector for presentation.
can import it to youtube/email back. look at platform
via askNlearn/myCloud so that they can submit their
work to us
recording can be edited at any point. dont have to start from
the beginning
student presentation to class
to surface misconceptions
What is the anticipated misconceptions?
Qn2: conveniently think of a concept that can
best solve the problem. will not check for accuracy based on reasoning
group discussion precedes presentation by one group
member to the class
within that group, students may teach
each other and get the problem right.
share ideas and learn from each others' mistakes
Feedback
peer assessment
more vocal students can give constructive feedback
learning as a class
TPACK:
use youtube/LMS to exploit mobility for further analysis
Concerns: platform for students to showcase thought processes?
Free app
Screen Cast Omatic.
Allows teachers to select any screen of choice on the
laptop. Play, record, over ride. Can publish it out on the
website. Similar function to what was suggested
Lesson Reflection (6th Aug)
Lesson Objective
Verbalise problem solving process in proper
mathematical language
App to capture their discourse
Use specific structure to justify their reasoning
Why agree/disagree
Understand their problemsolving process
Improve confidence. Enhance logical thinking process.
Improve the way they structure their thought processes
on paper
Learning through failure
Progress
Implemented with 2 classes in CCK
1 Ha, 1 Ma
Lesson flow
Presentation videos
P5 HA group: 50% found the answer.
P5 LA group: made assumptions that led to obstacles, brainstormed and eventually was able so solve
Feedback
Using comparisons as a form of scaffolding
Proportional reasoning
Questioning: seeing the part whole relationship
Moving forward
Developing a platform to discuss each others' thinking process/reflection
Parking the cognitive artifact
especially useful for problems with
multiple solutions
ÿ
Understanding the various properties of angles & lines
Analysis:
Conditions of Proposed Solution:
Estimating Angles
Analysis:
Conditions of Proposed Solution:
Measuring Angles
Analysis:
Conditions of Proposed Solution:
Drawing Angles
Analysis:
Conditions of Proposed Solution:
Drawing Triangles
Learning Issue 1: Using a protractor
Analysis:
Conditions of Proposed Solution:
Learning Issue 2: Drawing interior or exterior angle
Analysis:
Conditions of Proposed Solution:
Geometrical Construction
Drawing Triangles
Drawing 4-sided Figures
Lesson Suggestion
Lesson Objective
Construct what they intend to construct
Practise their construction skills
Use of geogebra platform
Measurement specific
exposure to various shapes
Use of screencast-o-matric to record the process
Use of Edmodo
Upload to youtube
Use of manipulation
Feedback
Schoology
24th Sept Lesson Suggestion
padlet on composite figure, address learning issues
Thinking aloud via ICT, constructing parallelogram
sketch and geogebra reasoning
Fractions
Learning Issue 1: Identifying Fractions
Learning Issue 2: Simplification
Learning Issue 3: Parts of a set
Word Problems
Keming: Ratio (P5)
Learning Issue 1: Students are unable to relate ratios to real life applications
Analysis:
relationship with other topics. Fractions, percentages. Craft task to relate all 3 topics. Multi representation of ratios
At P4 level, able to leverage on decimal to see the link between ratio and fraction
Relevance to real life situations
Fraction is a pertinent issue among students
Ratio->fraction->percentages
Related representations
Big idea behind Fraction/thinking skills involved/mathematical reasoning
What is the underlying concept of fraction?
Equal parts of a whole
Derived from equal division/sharing
Comparison of 2 or more quantities
quantities are of equal part
equal parts of a whole (fraction/ratio)
Subtopic
Action needed to help students understand the concept of fraction
Technology
Manipulative methods
SSM resources
every fraction is anchored by a whole
students get hands-on experience, kinaesthetic learning
Challenges
students find it challenging to grasp abstract concept
solution: use more concrete and physical examples (concrete manipulatives). Eg: mass, money
Inability to relate to real life scenarios/Dissociation with real life
Eg: exchange rate. Students are not familiar
Solution: ratio of syrup and water needed to make drinks.
Solution: inter level connectedness between topics.
How to help students understand the link?
Relate to real life applications
Fraction(P5): added dimension- part of the same and different whole. Students find it challenging to grasp this concept
Instruction design: guide student through conversation and action to see the link via multiple representation through ICT tools. Importance of teachers' questioning.
Reasoning
Consistency of familiar words
Connection gets disrupted if discourse/instructional words between topics changes. Students may then find it challenging to draw the link moving from topic to topic
Importance of communication
Visualization
See equal parts
How to link fraction to ratio?
SSM resources
Ratio
Relative quantity
Conditions of Proposed Solution:
differentiated tasks
Potential ICT tools
Exchange rate
Excel folder using formulas
Encourage student articulation/discussion, reasoning
Authentic learning
From the point of view of the learner
Connecting communication to concepts
Use multiple representation to encourage student discussion
Help students make overt their reasoning
Leverage on ICT tools
Use of questioning
address miconception through questions
Encourage students to justify their thought processes
Learning Issue 2: Solving word problems
Students are confused to syntheise the information given i.e. could not see the relationships between concepts.
Analysis:
Conditions of Proposed Solution:
Lesson Implementation (6th Aug)
Lesson objective
Concept of relationship between decimal and
percentage. Vice versa
Use the mathematical conversion platform, guided by Cynthia.
PCK reasoning: by establishing the r/s and see for themselves that base of percentage is 100, and r/s to decimal, their knowledge and then be transferrable
Instil skill ofgenerating patterns
Assess their level of understanding. Sift out their
misconceptions and addressit accordingly
exploratory, inductive
Able to convert percentage to decimal and vice versa,
given any context
Nan Hua: Mensuration
Relation of a smaller circle within a larger circle
Inability to relate ratio of the parts to the whole, hence making calculations inefficient
Suggested lesson
big semi circle with two small identical semi circle inside.
Question: find perimeter of shaded parts
Proposed solution:
1) part by part
2) short cut
Use GSP to derive shortcut
Concerns: time consuming to draw so many figures
and manually calculate. GSP enables various diagram
and auto calculate. Pupils focus on analysing the data
instead of the calculation. Gives more examples in a
shorter period of time.
Feedback
CK: Content knowledge not an issue. Concern is students not adopting the most efficient solution.
PK: Current pedagogy of teaching?
Using formula and prior knowledge
Concerns: time consuming esp
in exam context
Discover relationship and pattern through GSP
cultivate alternative way of thinking
about such a problem
cut short alot of time on calculation and help
with visualization
PK: How teachers teach this sort of problems?
Relationship between the radius and the diameter
Using TPACK to see relationships more efficiently
Without GSP, currently help them see basic shapes/patterns.
For more challenging problems, break down the question into smaller portions.
GSP
Still in midst of developing the platform
Aim is for students to discover the relationship
create a context for students to use that tool to justify
certain things.
Concerns
Make assessment. To discard existing practices?
Not the case.
Increasing the alternative problem solving methods?
Yes
Has to emerge in eventual lesson. Giving them a range
of problem solving methods. Draw on affordances of visualization, supported by technology to see the mathematical relationship. Through GSP applet, designed activity to elicit what is/is not the relationship
Cut and paste, shifting of shapes
which is more suitable?
Based on last year's PSLE circle question,
surprised teachers
cut and paste is more challenging in general
Suggested Lesson (6th Aug)
Lesson Objective
Using GSP, understanding value of pie.
Generate multiple cases to see a pattern
relationship between circumference of small circle
within big circle
Feedback
Scaffolding strategies
guide them to specific columns
Ask them to seek trends between values in
the columns
Use a platform to discuss their exploration
strategy. Hide the column and find out what
they come up with
Metacognition is important
Aim of activity is to see the relationship
between radius and diameter.
Next activity is to see the relationship
between big and small diameter for circles
within circles of varying sizes.
Learners' Difficulty
What challenges do students face?
Task Design
ICT for Maths
Finding relationships of circles within circles
Traditionally, hands on paper-cutting
Versus: ICT (more accurate values)
Use ICT to vocalize students' thoughts, hands on learning, enhance visualization skills, ritualize thinking routine
Use of GSP and Padlet
Lesson 1: Pi
Lesson 2: Circumference Investigation
Easy to replicate figures via GSP
Heuristics
Inability to use the most efficient method for word problem questions
Analysis:
Conditions of Proposed Solution: