Editing 759: 3x9
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.
The edit can be undone.
Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision | Your text | ||
Line 10: | Line 10: | ||
In college courses with a very large number of students (picture the huge, tiered, amphitheater-style lecture halls shown in any movie or TV show about college), teaching assistants are often employed to help the professors grade student work. In math and science courses, students are expected to solve the problems and show their work as supporting evidence. Due to the high volume of work to grade, whether it's being done by the professor or a TA, the grader may get lazy and look for correct answers and the existence of work without checking that the work is accurate. | In college courses with a very large number of students (picture the huge, tiered, amphitheater-style lecture halls shown in any movie or TV show about college), teaching assistants are often employed to help the professors grade student work. In math and science courses, students are expected to solve the problems and show their work as supporting evidence. Due to the high volume of work to grade, whether it's being done by the professor or a TA, the grader may get lazy and look for correct answers and the existence of work without checking that the work is accurate. | ||
− | The math shown in this comic switches from √ being square root notation to it being division notation midway. That is an illegal operation. | + | The math shown in this comic switches from √ being square root notation to it being division notation midway. That is an illegal operation. But the correct answer is reached anyway, because 27 is the correct answer to 3 × 9, 3√81, ''and'' 81 ÷ 3. |
More generally, this pattern holds true for any number and its square; namely, xy = y² ÷ x whenever y = x². | More generally, this pattern holds true for any number and its square; namely, xy = y² ÷ x whenever y = x². |