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Second grade (Segundo de primaria) Revision of materials
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hello chicos today we're going to learn about materials there are two kinds of
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materials natural materials and man-made materials natural materials come from
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plants animals or nature wood is a natural material man-made materials are
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are made from other materials a water bottle is a man-made material this is a spring it's made
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of metal metal this is a notebook its pages are made of paper paper this is a pot it's made of
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This is a glass.
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It's made of glass.
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This is acrylic.
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It's made of plastic.
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This is a stool.
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It's made of wood.
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Materials have different characteristics.
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this is elastic elastic it can stretch out and return to its original shape a rubber band is
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elastic this is flexible flexible it can bend without breaking some plastics are flexible
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This is hard, hard. We can't cut it easily. Metal is hard. This is resistant, resistant. It can support heavy weights. Hardwood is resistant.
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This is soft, soft.
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This material isn't hard.
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A sponge is soft.
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This is fragile, fragile.
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This material isn't resistant.
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Ceramics are fragile.
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This is rigid, rigid.
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This material isn't flexible.
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Wood is rigid.
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Objects can also be heavy or have a great weight.
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The basketball weighs more than the tennis ball.
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The basketball is heavier than the tennis ball.
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Look at the two jars.
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The one on the right occupies more space because it is bigger than the one on the left.
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You can put more sugar in the jar on the right because it is bigger.
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Thank you so much for listening.
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- Idioma/s:
- Autor/es:
- Ángelica
- Subido por:
- Plácido J.
- Licencia:
- Todos los derechos reservados
- Visualizaciones:
- 87
- Fecha:
- 5 de mayo de 2020 - 19:09
- Visibilidad:
- Público
- Centro:
- CP INF-PRI DANIEL VAZQUEZ DIAZ
- Duración:
- 04′ 09″
- Relación de aspecto:
- 1.61:1
- Resolución:
- 592x368 píxeles
- Tamaño:
- 18.52 MBytes
