The Strength and the Hardness Test

I have just bought the Asus ZenFone 2 recently and know about Gorilla Glass. They say that the glass is scratch-resistant and strong. That gets me petty excited as I can use that in Science. Yes, it is all about property of material. Hope to get my pupils to see the relevance in what they are learning.

 

Another video that we can use is the comparison of Gorilla Glass and Sapphire.  In this video, there are both hardness and strength test.

All about hardness

Hardness is one of the property that the Primary School pupils need to learn. Pupils usually use the word hard and strong interchangeably. However, this is not accepted in Primary School Science as hardness and strength re two very different concepts. For hardness, we are talking about how “scratchable”. As for strength, we use the “put-weight-until-it-break” test. Here are some of my ideas on hardness

Gorilla Glass

Check out this article on the screen on most mobile phones might be scratch-resistance and there might not be a need for screen protector . Thanks to Gorilla Glass.  We can use that article as a starter to discuss about the property of materials

 

Chopping Board

In order to make the pupils remember this, I would use the chopping board example. Will get the kid to read the article at Fast Facts About Cutting Boards and Food Safety in Your Kitchen and get them if they can articulate the property being highlighted in the article.

chopper

ScreenGrab from Fast Facts About Cutting Boards and Food Safety in Your Kitchen