Knaph

Rocks we use

Many everyday things come from rocks: table salt from rock salt, plaster from gypsum, cement from limestone, glass from melted sand, pencil lead from graphite, and iron from iron ore, which is mined and melted in an ironworks. A rock takes millions of years to form and only days to dig out, so rocks can run out, and mines harm the places where plants and animals live.

Depth 1 · Foundation

You can name things made from rocks - salt, plaster, cement, glass, iron - and say why rocks shouldn't be wasted.

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Depths of understanding

  1. 1

    Foundation

    You can name things made from rocks - salt, plaster, cement, glass, iron - and say why rocks shouldn't be wasted.

Your path here

What's still between you and Rocks we use, depth 1, in the order you can learn it.

  1. 1RocksDepth 1 · Foundation · Rocks and Soil
  2. 2Rocks we useDepth 1 · Foundation · Rocks and Soil

Where it fits

Builds on