In this second part of the lesson, we start out with two tricky TRUE/FALSE questions:
(1) Integers less than 5 have an absolute value less than 5. True or false?
(2) A number and its opposite have the same absolute value. True or false?
Lastly, I solve a problem where we enlarge a triangle by using the scale factor of 3. The three vertices of the triangle are at the points (-1, -2), (1, -1), and (0, 1) in the coordinate grid. Then we multiply all those coordinates by 3 to get a new, bigger triangle that is similar to the original.
The first part of this lesson is at https://www.youtube.com/watch?v=pQxpApY67To
Learn more pre-algebra with Math Mammoth Grade 7 Curriculum at http://www.mathmammoth.com/complete/grade_7.php - available as an instant download and as printed copies. Check out the free samples also!
Tagged under: Integer,Mathematics (Field Of Study),pre-algebra,triangle,scale factor,coordinate grid,grade 7,7th grade,math,absolute
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