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Category | Format | Size |
---|---|---|
Third Grade Science Volume 1, Textbook Edition | pptx | 6 MB |
Description
"Which material is hard" Materials around us PPT courseware
Based on what we observed, arrange the wooden strips, iron nails, and plastic rulers in order of hardness from greatest to least. Which material is the hardest?
Iron nails - plastic ruler - wooden strips
Let’s take a look at “The Story of the Beverage Can” on page 50 of the book
What processes are required to produce aluminum cans? What properties of metal are used?
Taking advantage of the ductility of metal.
Empty used aluminum cans can be recycled. Empty aluminum cans returned to the factory can be heated and smelted into aluminum sheets to produce new aluminum cans. This saves many resources and energy than mining bauxite.
discuss
What should we do with the empty aluminum cans after drinking the beverage?
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For more information about the PPT courseware "Which material is hard among the materials around us", please click the Materials around us ppt Which material is hard ppt label.
"Which material is hard" Materials around us PPT courseware 3:
"Which material is hard" Materials around us PPT courseware 3 We choose the four most common items around us: wooden strips, cardboard, nails and plastic to study. Which of them is harder? Try to come up with a research method yourself first. Comparing hardness, you can prepare wood...
"Which material is hard" Materials around us PPT courseware 2:
"Which material is hard" Materials around us PPT courseware 2 There are many objects around us, and they are made of different materials. We are all familiar with wood, fiber, paper, glass, metal, plastic, rubber, etc. Characteristics of wood: yellowish white...
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Update Time: 2024-06-30
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