You should spend about 20 minutes on this task.
The diagram below shows the development of cutting tools in the Stone Age. Summarize the information by selecting and reporting the main features and make comparisons where relevant.
Write at least 150 words.
The development of cutting tools from 1.4 million years ago to 0.8 million years ago in the Stone Age is delineated in the given diagram.
It is clear from the diagram that the overall features of the tools became more user-friendly over the years.
As seen in the chart, about 1.4 million years ago, the front view of the tools was similar to a sharp triangle, pointed at the top with blunt edges. However, after 0.6 million years, the tools became more pointed at the top, and the edges became sharper. The maximum diameter at the middle increased from just 3 cm to 5 cm, and the bottom was shaped without irregular edges.
When looking from the side, the width of the tools reduced by around 2 cm, with the top and bottom edges sharper compared to how it was 1.4 million years ago.
When looking from the back side, from a conical shape, the tools appeared to be more or like oval in shape in the later period. The overall height of the tools also reduced by about 2 to 3 cm, so that it became more handy.
Word count: 179