The diagram illustrates how stone tools is evolved in the Stone Age.
Overall, with a gap of 0,6 billion years, there were significant improvements in shape and surface of tool B including sharp edge and appropriate shape than tools A which reflects the disparity between the craftsmanship of creators in 1,4 billion years ago and 0,8 billion years ago.
1,4 million years ago, tool A was devised with a length of about 8cm and a rough surface. It is clear that both of the tool faces are uneven and express a noticeable difference with a natural rock. In addition, the most important part of a cutting device is the sharp edge which is cannot be found on tool A, apparently showing the backward technique.
In comparison, tool B aged 0,8 million years old conveys the success in development is not only size but also its surface. The most remarkable point is the clear tear-drop shape consisting of a rounded base and a pointed end with a sharpened border increasing the effectiveness in cutting purpose. Moreover, the advanced technique of people 0,8 million years ago gave them the ability to create a symmetrical object from stone material. In terms of surface, the outer layer is refined by being knapped to remove the natural cortex. Therefore, these features rendered this version more superior in cutting efficiency.
Essay evaluations by e-grader
Transition Words or Phrases used:
also, apparently, but, if, moreover, so, therefore, in addition
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 12.0 7.0 171% => OK
Auxiliary verbs: 1.0 1.00243902439 100% => OK
Conjunction : 7.0 6.8 103% => OK
Relative clauses : 3.0 3.15609756098 95% => OK
Pronoun: 6.0 5.60731707317 107% => OK
Preposition: 29.0 33.7804878049 86% => OK
Nominalization: 3.0 3.97073170732 76% => OK
Performance on vocabulary words:
No of characters: 1114.0 965.302439024 115% => OK
No of words: 224.0 196.424390244 114% => OK
Chars per words: 4.97321428571 4.92477711251 101% => OK
Fourth root words length: 3.86867284054 3.73543355544 104% => OK
Word Length SD: 2.75473560252 2.65546596893 104% => OK
Unique words: 136.0 106.607317073 128% => OK
Unique words percentage: 0.607142857143 0.547539520022 111% => OK
syllable_count: 340.2 283.868780488 120% => OK
avg_syllables_per_word: 1.5 1.45097560976 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 1.53170731707 131% => OK
Article: 5.0 4.33902439024 115% => OK
Subordination: 0.0 1.07073170732 0% => More adverbial clause wanted.
Conjunction: 0.0 0.482926829268 0% => OK
Preposition: 4.0 3.36585365854 119% => OK
Performance on sentences:
How many sentences: 10.0 8.94146341463 112% => OK
Sentence length: 22.0 22.4926829268 98% => OK
Sentence length SD: 59.5429256923 43.030603864 138% => OK
Chars per sentence: 111.4 112.824112599 99% => OK
Words per sentence: 22.4 22.9334400587 98% => OK
Discourse Markers: 6.3 5.23603664747 120% => OK
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 0.0 1.69756097561 0% => OK
Sentences with positive sentiment : 8.0 3.70975609756 216% => Less positive sentences wanted.
Sentences with negative sentiment : 0.0 1.13902439024 0% => More negative sentences wanted.
Sentences with neutral sentiment: 2.0 4.09268292683 49% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.1741036303 0.215688989381 81% => OK
Sentence topic coherence: 0.0737453357173 0.103423049105 71% => OK
Sentence topic coherence SD: 0.0702822981584 0.0843802449381 83% => OK
Paragraph topic coherence: 0.125841435744 0.15604864568 81% => OK
Paragraph topic coherence SD: 0.0766285596163 0.0819641961636 93% => OK
Essay readability:
automated_readability_index: 13.2 13.2329268293 100% => OK
flesch_reading_ease: 57.61 61.2550243902 94% => OK
smog_index: 8.8 6.51609756098 135% => OK
flesch_kincaid_grade: 10.7 10.3012195122 104% => OK
coleman_liau_index: 11.84 11.4140731707 104% => OK
dale_chall_readability_score: 8.89 8.06136585366 110% => OK
difficult_words: 59.0 40.7170731707 145% => OK
linsear_write_formula: 11.0 11.4329268293 96% => OK
gunning_fog: 10.8 10.9970731707 98% => OK
text_standard: 11.0 11.0658536585 99% => OK
What are above readability scores?
---------------------
Rates: 89.8876404494 out of 100
Scores by essay e-grader: 8.0 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.
Transition Words or Phrases used:
also, apparently, but, if, moreover, so, therefore, in addition
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 12.0 7.0 171% => OK
Auxiliary verbs: 1.0 1.00243902439 100% => OK
Conjunction : 7.0 6.8 103% => OK
Relative clauses : 3.0 3.15609756098 95% => OK
Pronoun: 6.0 5.60731707317 107% => OK
Preposition: 29.0 33.7804878049 86% => OK
Nominalization: 3.0 3.97073170732 76% => OK
Performance on vocabulary words:
No of characters: 1114.0 965.302439024 115% => OK
No of words: 224.0 196.424390244 114% => OK
Chars per words: 4.97321428571 4.92477711251 101% => OK
Fourth root words length: 3.86867284054 3.73543355544 104% => OK
Word Length SD: 2.75473560252 2.65546596893 104% => OK
Unique words: 136.0 106.607317073 128% => OK
Unique words percentage: 0.607142857143 0.547539520022 111% => OK
syllable_count: 340.2 283.868780488 120% => OK
avg_syllables_per_word: 1.5 1.45097560976 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 1.53170731707 131% => OK
Article: 5.0 4.33902439024 115% => OK
Subordination: 0.0 1.07073170732 0% => More adverbial clause wanted.
Conjunction: 0.0 0.482926829268 0% => OK
Preposition: 4.0 3.36585365854 119% => OK
Performance on sentences:
How many sentences: 10.0 8.94146341463 112% => OK
Sentence length: 22.0 22.4926829268 98% => OK
Sentence length SD: 59.5429256923 43.030603864 138% => OK
Chars per sentence: 111.4 112.824112599 99% => OK
Words per sentence: 22.4 22.9334400587 98% => OK
Discourse Markers: 6.3 5.23603664747 120% => OK
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 0.0 1.69756097561 0% => OK
Sentences with positive sentiment : 8.0 3.70975609756 216% => Less positive sentences wanted.
Sentences with negative sentiment : 0.0 1.13902439024 0% => More negative sentences wanted.
Sentences with neutral sentiment: 2.0 4.09268292683 49% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.1741036303 0.215688989381 81% => OK
Sentence topic coherence: 0.0737453357173 0.103423049105 71% => OK
Sentence topic coherence SD: 0.0702822981584 0.0843802449381 83% => OK
Paragraph topic coherence: 0.125841435744 0.15604864568 81% => OK
Paragraph topic coherence SD: 0.0766285596163 0.0819641961636 93% => OK
Essay readability:
automated_readability_index: 13.2 13.2329268293 100% => OK
flesch_reading_ease: 57.61 61.2550243902 94% => OK
smog_index: 8.8 6.51609756098 135% => OK
flesch_kincaid_grade: 10.7 10.3012195122 104% => OK
coleman_liau_index: 11.84 11.4140731707 104% => OK
dale_chall_readability_score: 8.89 8.06136585366 110% => OK
difficult_words: 59.0 40.7170731707 145% => OK
linsear_write_formula: 11.0 11.4329268293 96% => OK
gunning_fog: 10.8 10.9970731707 98% => OK
text_standard: 11.0 11.0658536585 99% => OK
What are above readability scores?
---------------------
Rates: 89.8876404494 out of 100
Scores by essay e-grader: 8.0 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.