learning log

Topics: Group, Symmetry, Geometry Pages: 2 (405 words) Published: September 25, 2014
LEARNING LOG 1: Observe, Connect and Reflect on Your Learning To gaze is to think. Salvador Dali

PART I – Concepts in Symmetry

Period

Focus Image

Question

(20 - 30 words) (2 marks)

Describe the symmetry of
the Viking shield.

The rotational angle is 360°/4 = 90°
There are 4 mirror lines whereby 2 are unique.
4mm

Complete at the end of

Week 1

Image 1
(20 - 30 words) (2 marks)

What was the most
surprising or interesting
fact you learnt from
Week 1 lectures

Surprising fact was that I realized almost most objects around us have reflection and rotation operations and I wasn’t aware of it all these years, till I learnt it recently

(20 - 30 words) (2 marks

Describe the symmetrical
elements you see in this
Japanese embroidery.

No mirror lines; 3-fold rotation (triad); point symmetry is 3 whereby the rotational angle is 360°/3 = 120°)

Complete at the end of

Week 2
Image 2
(up to 20 words) (2 marks)

of the Viking shield?

There is a 4-fold rotation (tetrad).

1

You can’t criticize geometry. It’s never wrong. Paul Rand

PART II – Plane (2D) and Space (3D) Symmetry

Period

Focus Image

Question

(up to 40 words) (2 marks)

Use the formal
descriptors of plane
symmetry to describe this
bathroom tile
tessellation.

This is a p4mm (No.11)
The tile has Mirror lines, glide lines, 2-fold rotation and 4-fold rotation

Complete at the end of

Week 3
Image 3
(up to 20 words) (2 marks)

How are you now more
observant of symmetry in
examples.

I now notice that most of the things around us are symmetric. For example, observed the bricks of my HDB house are c2mm (No.9).

(30 - 40 words) (2 marks)

The triangle in Image 4 is
weird. Was Paul Rand
correct – geometry is
never wrong?

Paul Rand is right. Geometry is never wrong but art can deceive. Artist can misrepresent...