The diagram below shows the development of cutting tools in the Stone Age Summarise the information by selecting and reporting the main features and make comparison where relevant

The provided diagram sketches out the advancement of cutting tools which are used in the Stone Age.
Overall, tool A was invented so long before tool B, but it had a smaller size in comparison with B.
It can be seen from the given picture that tool A emerged 1.4 million years ago when most of objects were human-made. That is the reason why it looked so rude and simple, with a stone was being cut in various side so that it would be easier to applied in human activities such as hunting or planning trees. In the front side of the tool, an oval shape can be easily seen while the back was slimmer and the side of the tool was thin.
As can be seen from the second picture, tool B had shorter age than A, and it had been improved. In addition, the front and back sides of the tool bore the resemblance to droplets. Moreover, the side of the tool was sharpened for betterment of using.

Votes
Average: 7.8 (2 votes)
Essays by the user:

Grammar and spelling errors:
Line 2, column 100, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...had a smaller size in comparison with B. It can be seen from the given picture th...
^^^
Line 3, column 86, Rule ID: MOST_SOME_OF_NNS[1]
Message: After 'most of', you should use 'the' ('most of the objects') or simply say ''most objects''.
Suggestion: most of the objects; most objects
...ol A emerged 1.4 million years ago when most of objects were human-made. That is the reason why...
^^^^^^^^^^^^^^^

Transition Words or Phrases used:
but, look, moreover, second, so, while, in addition, such as

Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments

Performance on Part of Speech:
To be verbs : 14.0 7.0 200% => OK
Auxiliary verbs: 4.0 1.00243902439 399% => Less auxiliary verb wanted.
Conjunction : 6.0 6.8 88% => OK
Relative clauses : 5.0 3.15609756098 158% => OK
Pronoun: 8.0 5.60731707317 143% => Less pronouns wanted
Preposition: 21.0 33.7804878049 62% => OK
Nominalization: 4.0 3.97073170732 101% => OK

Performance on vocabulary words:
No of characters: 722.0 965.302439024 75% => OK
No of words: 170.0 196.424390244 87% => More content wanted.
Chars per words: 4.24705882353 4.92477711251 86% => OK
Fourth root words length: 3.61087313685 3.73543355544 97% => OK
Word Length SD: 2.24813648319 2.65546596893 85% => OK
Unique words: 101.0 106.607317073 95% => More unique words wanted.
Unique words percentage: 0.594117647059 0.547539520022 109% => OK
syllable_count: 222.3 283.868780488 78% => OK
avg_syllables_per_word: 1.3 1.45097560976 90% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 1.53170731707 131% => OK
Article: 4.0 4.33902439024 92% => OK
Subordination: 1.0 1.07073170732 93% => OK
Conjunction: 2.0 0.482926829268 414% => Less conjunction wanted as sentence beginning.
Preposition: 3.0 3.36585365854 89% => OK

Performance on sentences:
How many sentences: 8.0 8.94146341463 89% => OK
Sentence length: 21.0 22.4926829268 93% => OK
Sentence length SD: 33.9190212123 43.030603864 79% => OK
Chars per sentence: 90.25 112.824112599 80% => OK
Words per sentence: 21.25 22.9334400587 93% => OK
Discourse Markers: 7.5 5.23603664747 143% => OK
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 2.0 1.69756097561 118% => OK
Sentences with positive sentiment : 2.0 3.70975609756 54% => More positive sentences wanted.
Sentences with negative sentiment : 3.0 1.13902439024 263% => Less negative sentences wanted.
Sentences with neutral sentiment: 3.0 4.09268292683 73% => OK
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.143829513609 0.215688989381 67% => OK
Sentence topic coherence: 0.0755210016925 0.103423049105 73% => OK
Sentence topic coherence SD: 0.0583501974459 0.0843802449381 69% => OK
Paragraph topic coherence: 0.117977200099 0.15604864568 76% => OK
Paragraph topic coherence SD: 0.0604362836554 0.0819641961636 74% => OK

Essay readability:
automated_readability_index: 9.2 13.2329268293 70% => Automated_readability_index is low.
flesch_reading_ease: 75.54 61.2550243902 123% => OK
smog_index: 3.1 6.51609756098 48% => Smog_index is low.
flesch_kincaid_grade: 7.9 10.3012195122 77% => OK
coleman_liau_index: 7.37 11.4140731707 65% => OK
dale_chall_readability_score: 7.84 8.06136585366 97% => OK
difficult_words: 34.0 40.7170731707 84% => More difficult words wanted.
linsear_write_formula: 10.5 11.4329268293 92% => OK
gunning_fog: 10.4 10.9970731707 95% => OK
text_standard: 8.0 11.0658536585 72% => OK
What are above readability scores?

---------------------

Rates: 78.6516853933 out of 100
Scores by essay e-grader: 7.0 Out of 9
---------------------
Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.

Grammar and spelling errors:
Line 2, column 100, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...had a smaller size in comparison with B. It can be seen from the given picture th...
^^^
Line 3, column 86, Rule ID: MOST_SOME_OF_NNS[1]
Message: After 'most of', you should use 'the' ('most of the objects') or simply say ''most objects''.
Suggestion: most of the objects; most objects
...ol A emerged 1.4 million years ago when most of objects were human-made. That is the reason why...
^^^^^^^^^^^^^^^

Transition Words or Phrases used:
but, look, moreover, second, so, while, in addition, such as

Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments

Performance on Part of Speech:
To be verbs : 14.0 7.0 200% => OK
Auxiliary verbs: 4.0 1.00243902439 399% => Less auxiliary verb wanted.
Conjunction : 6.0 6.8 88% => OK
Relative clauses : 5.0 3.15609756098 158% => OK
Pronoun: 8.0 5.60731707317 143% => Less pronouns wanted
Preposition: 21.0 33.7804878049 62% => OK
Nominalization: 4.0 3.97073170732 101% => OK

Performance on vocabulary words:
No of characters: 722.0 965.302439024 75% => OK
No of words: 170.0 196.424390244 87% => More content wanted.
Chars per words: 4.24705882353 4.92477711251 86% => OK
Fourth root words length: 3.61087313685 3.73543355544 97% => OK
Word Length SD: 2.24813648319 2.65546596893 85% => OK
Unique words: 101.0 106.607317073 95% => More unique words wanted.
Unique words percentage: 0.594117647059 0.547539520022 109% => OK
syllable_count: 222.3 283.868780488 78% => OK
avg_syllables_per_word: 1.3 1.45097560976 90% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 1.53170731707 131% => OK
Article: 4.0 4.33902439024 92% => OK
Subordination: 1.0 1.07073170732 93% => OK
Conjunction: 2.0 0.482926829268 414% => Less conjunction wanted as sentence beginning.
Preposition: 3.0 3.36585365854 89% => OK

Performance on sentences:
How many sentences: 8.0 8.94146341463 89% => OK
Sentence length: 21.0 22.4926829268 93% => OK
Sentence length SD: 33.9190212123 43.030603864 79% => OK
Chars per sentence: 90.25 112.824112599 80% => OK
Words per sentence: 21.25 22.9334400587 93% => OK
Discourse Markers: 7.5 5.23603664747 143% => OK
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 2.0 1.69756097561 118% => OK
Sentences with positive sentiment : 2.0 3.70975609756 54% => More positive sentences wanted.
Sentences with negative sentiment : 3.0 1.13902439024 263% => Less negative sentences wanted.
Sentences with neutral sentiment: 3.0 4.09268292683 73% => OK
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.143829513609 0.215688989381 67% => OK
Sentence topic coherence: 0.0755210016925 0.103423049105 73% => OK
Sentence topic coherence SD: 0.0583501974459 0.0843802449381 69% => OK
Paragraph topic coherence: 0.117977200099 0.15604864568 76% => OK
Paragraph topic coherence SD: 0.0604362836554 0.0819641961636 74% => OK

Essay readability:
automated_readability_index: 9.2 13.2329268293 70% => Automated_readability_index is low.
flesch_reading_ease: 75.54 61.2550243902 123% => OK
smog_index: 3.1 6.51609756098 48% => Smog_index is low.
flesch_kincaid_grade: 7.9 10.3012195122 77% => OK
coleman_liau_index: 7.37 11.4140731707 65% => OK
dale_chall_readability_score: 7.84 8.06136585366 97% => OK
difficult_words: 34.0 40.7170731707 84% => More difficult words wanted.
linsear_write_formula: 10.5 11.4329268293 92% => OK
gunning_fog: 10.4 10.9970731707 95% => OK
text_standard: 8.0 11.0658536585 72% => OK
What are above readability scores?

---------------------

Rates: 78.6516853933 out of 100
Scores by essay e-grader: 7.0 Out of 9
---------------------
Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.