Classify rocks according to color shape, hardness, and texture
Rocks record the Earth’s history when those rocks where formed. When students get a piece of rock in lab they need to associate different environments with that rock.
In the first grade, students need to begin grouping these rocks into basic environments of sedimentary, igneous, and metamorphic.
Although sedimentary is the most common rock found on the surface of the Earth, students can find most of the groups very easily. It is very common for buildings to be made of rocks.
In cities, you can walk along buildings and see the different types of rocks, even if they did not form in that city.
In the next slide I will show you sample of characterizing rocks with this stones
Silicatesare minerals which consist of silicon and oxygen with some metals or nonmetals. Some rocks which have these minerals are granite, sandstone, basalt, gneiss and quartzite.
Carbonates are minerals which consist of carbon, oxygen and some other elements. Rocks in which these minerals are found include marble, limestone and dolomite
Oxides are minerals which consist of oxygen and some other elements. They are found in rocks such as sandstone and shale. Although there are about 3000 different minerals found on Earth, there are only very few of them which form rocks