SDE Day 3 Sessions

transcript

morning session|

SE03 Developing the Ability to See Patterns through Mathematics

yeap ban har | marshall cavendish institute

yeapbanhar@gmail.com | www.banhar.blogspot.com

to meet demands of global economy

Problem-Solving Approach

to meet the needs of every learner

CPA Approach

application

lesson |

In Common Core State Standards, Grade 4

students learn about angles and by Grade 8, they

learn about sum of exterior and interior angles

of polygons.

drill-and-practice

lesson |

Multi-digit division is done in Grades 3 through 5 in

Common Core State Standards.

morning session|

SE09 Visualization – Getting Students to See the Math

We will use a tangram set for this workshop. You can cut them out from your handouts or make one using the square paper provided. You can also download a tangram app from Apple Store.

3-piece solutions

3-piece solutions can be extended to give 5-piece solutions by adding two largest triangles.

A non-congruent 5-piece solution

y + z = 162 Sum of angles = 360 + 180 = 540 3x = 540 – 2 x 162 3x = 540 – 324 3x = 216 x = 72

Greg Tang’s solution: z = 2y (why?) y + z = 162 3y = 162 = 150 + 12 y = 54 x = 180 – 2 x 54 = 180 – 108 = 72

afternoon session|

SF03 Developing Number Sense – A Differentiated Approach

Singapore

Malaysia

Thailand

Indonesia

International

rmedia

afternoon session|

SF08 Engaging Students in Deep Mathematical Thinking with Anchor Tasks

Area = 2.5 Number of dots around the polygon = 5

Area = 2 Number of dots around the polygon = 4

Area = 12 Number of dots around the polygon = 24

Lim Siong Guan Head, Civil Service

Singapore

SDE Day 3 Sessions

Education