Second grade has been busy learning about properties and sizes of rocks. They sorted river rocks by color, size, texture, luster and shape.
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| Sorting by color. |
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Sorting by color can be hard because each rock can have
so many colors in it! |
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We put the river rocks in water to see if it changed the way we
would sort our rocks. |
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| Looking at a river rocks mixture. |
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| So many different sizes and colors! |
The rock mixture was harder to sort by hand, so we used three different sized mesh screens to help!
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| The medium sized rocks stay on the medium screen. |
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| The large rocks stay on the large screen. |
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| Four different sized rocks...all sorted! |
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Trying all three screens together. As long as they
are stacked small, medium and large,
they still sort the rocks! |
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| Writing down observations. |
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Some of the bigger rocks can slide through, depending on the
shape of the rock. |
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Rock get their name from what they are made of and by what size they are.
The river rock mixture was made up of pebbles, gravel and sand. |
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