18/05/2021

Appreciations

Free Program for SEAMEO School Networkfrom the University of Tsukuba, Affiliate Member of SEAMEO:Teaching Mathematics to Develop Mathematical Thinking as Higher Order Thinking

How do you teach? Why?

Lesson 17: How to introduce column multiplication
Reflection

Isoda, Masami. Prof., Faculty of Human Sciences
Director of CRICED, The University of Tsukuba, Japan
With collaborations ofWe are reading the JP textbook by using terminology to explain to distinguish every
content of learning and sequence of content for knowing the way to develop children
who learn and think by and for themselves through the preparation of future learning.

Revitalizing
Teacher Education

Adopting a 21stCentury Curriculum

Acquisition

Raimundo Olfos and Aida Yap

Curriculum Standards: SEABES-CCRLS( by SEAMEO-RECSAM (Mangao, Ahmad, Isoda; 2017)

ReviewUsing what you already knew on the past 16 lessons!

L12: How to introduce
column addition andsubtraction

HOTS isMath. T.

Thoseterminology
distinguishtasks andexplain task
sequence
for thepreparationof futurelearning.

2Review

What is column multiplication?

L13: How to extend
column addition andL13:
subtraction?

 Participants need toconsider what’s new.

ReviewOpen Access Participants of this program are able to imagine the ways oflearning from the past process of learning.

Seeyounextaboutclass!
Howcanwe think
how to invent column multiplication?
?

Preparation ofColumn
multiplication?

Commutativity

Distirubution1

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Necessity

Extension to 0

Rules of Multi.:
5 x 1= 5
5 x 8=40
5 x 9=45
5 x10=50

Permanence ofForm
Here, multiplicationof 0 is not reputedaddition.

inductively 5[0]?
Distribution:
5x ( 7 +3 )for making 10

reasonable

Associativity

Task Sequence for think about how tocalculate by Mr. Muramoto, Hideyuki
Task 1

Task 2

Preparations!
Various
Possibilities byusing distributions2

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Extension of Multiplication fromrepeated addition for Multiplication table
to distribution for Column Multiplication
Think about
how tocalculate

Gakko Tosho: Study with your friends:
Mathematics for Elementary School Series

References

Primary School Textbook
2001 Curriculum2005 Japanese Edition
2005 English Edition↓
2010
Thai Ed.

2005 Edition

10 Editions

2010 Edition

Junior High S. Textbook
2012 Curriculum2016 Japanese-Edition
2019 English-Edition2020 Indonesian-Edition
202X Thai Ed.

4 Editions

15Isoda, M., Tall, D. (2019). Junior High School
Mathematics Textbook, Gakko Tosho

4 Editions

NEWEST EDITION

2012 Mexico Ed.
2019 Chile Pro. Ed.
2011 Curriculum2011 Japanese Edition
2011 English Edition↓
2019 Papua N.G. Edit.
2020 Indonesian Edi.
2020 Chile Ed.
2015 Japanese-Edition
2015 English-Edition2020 Curriculum2020 Japanese Edition2020 English Edition
16References
Masami Isoda, Raimundo Olfos edited (2020). Teaching Multiplication with Lesson Study: Japanese and Ibero-American Theories forInternational Mathematics Education. Cham, Switzerland: Springer. (Open Access)
Masami Isoda, Aki Murata (2020). Study with your friends: Mathematics for Elementary School (12 vols.). Tokyo, Japan: Gakko Tosho.
Masami Isoda, Aki Murata, Aida Yap (2015). Study with your friends: Mathematics for Elementary School (12 vols.). Tokyo, Japan:Gakko Tosho.
Masami Isoda, David Tall (2019). Mathematics for Junior High School (3 vols.). Tokyo, Japan: Gakko Tosho.

Dominador Dizon Mangao, Nur Jahan Ahmad, Masami Isoda edited (2017).SEAMEO basic education standards (SEA-BES): Common
core regional learning standards (CCRLS) in mathematics and science . Penang, Malaysia: SEAMEO-RECSAM,
http://www.recsam.edu.my/sub_sea-bes/images/docs/SEAMEO-ASEAN-Curriculum-SEABES-CCRLS-Standards.pdf
Maitree Inprasitha, Masami Isoda, Patsy Wang Iverson, Ban Har Yap (2015). Lesson Study: Challenges in Mathematics Education . NewJersey, USA: World Scientific
Masami Isoda, Shigeo Katagiri (2012). Mathematical Thinking: How to develop it in the classroom. New Jersey, USA: World Scientific
TEH Kim Hong, ISODA Masami, GAN Teck Hock (in printing). Mathematics Challenges for Classroom Practices at the Lower Primary
Level. Penang, Malaysia: SEAMEO-RECSAMISODA Masami, TEH Kim Hong, GAN Teck Hock (in printing). Mathematics Challenges for Classroom Practices at the Upper Primary
Level. Penang, Malaysia: SEAMEO-RECSAMGAN Teck Hock, ISODA Masami, TEH Kim Hong (2021). Mathematics Challenges for Classroom Practices at the Lower Secondary
Level. Penang, Malaysia: SEAMEO-RECSAM
Hosomizu, Y. translated by Gould, P. Isoda, M., Foo, C. (2010). Red dragonfly mathematics challenge. Department of Education, NewSouth Wealth. https://schoolsequella.det.nsw.edu.au/file/20a29ac1-c6f3-4ca3-84b1-2d8488a4cbcd/1/reddragonfly.zip/index.html
Hosomizu, Y. translated by Gould, P. Isoda, M., Foo, C. (2011). Companion: Mathematics Challenges. Department of Education, NewSouth Wealth. https://www.mansw.nsw.edu.au/shop/pre-k-8-books/dragonfly-companion

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