The diagrams below show two cutting tools made from stone. They are from an early period and a later period of human history. The tools were made by breaking off small pieces of stone.

The pictures illustrate two cutting instruments created from

stone

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which belong to an early period and a later period of human history. They were made using the technique where the

stone

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is broken off into small pieces.

Overall

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, it is seen from illustrations that people started making tools more accurate and sharp,

in contrast

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to the early period.

Additionally

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, they made changes in techniques leaving specific material at the bottom of the

stone

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, so it looked like a water drop, after that, it was easier to hold. 1.4 million years ago, it

is

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was

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shown that the process of making tools just started, and communities did not know for sure how to make them.

Furthermore

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, the

stone

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from the first picture does not have a figure as clear as the

stone

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that was made 0.8 million years ago. After 600000 years, the folks learned how to make instruments more convenient, and changed their form so it reminded water drops.