Lesson slides: Development on Production method

Here are the links to the slides on Development on Production method:

https://www.slideshare.net/Caksback/development-on-production-method

Lesson slides: Development on Material selection

Here is the link to the slides on development on Material selection:

https://www.slideshare.net/Caksback/development-on-material-selection

Lesson slides: Shape-borrowing for Sec 3 students

Here is the link to the slides on Shape-borrowing for Sec 3 students:

https://www.slideshare.net/Caksback/shape-borrowing-for-sec-3