It takes the average reader 4 hours and 44 minutes to read How Invention Begins by John H. Lienhard
Assuming a reading speed of 250 words per minute. Learn more
Original publication and copyright date: 2006.
How Invention Begins by John H. Lienhard is 277 pages long, and a total of 71,189 words.
This makes it 93% the length of the average book. It also has 87% more words than the average book.
The average oral reading speed is 183 words per minute. This means it takes 6 hours and 29 minutes to read How Invention Begins aloud.
How Invention Begins is suitable for students ages 12 and up.
Note that there may be other factors that effect this rating besides length that are not factored in on this page. This may include things like complex language or sensitive topics not suitable for students of certain ages.
When deciding what to show young students always use your best judgement and consult a professional.
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