Assessment Problem:
Is there a value for x that will make the following statement true?
(6x-8-15x)+12>(6x-8-15x)+6
Mathematical Issues:
This task encourages students to think intuitively about the problem rather than resort to formal procedures.
Common Responses:
(something) + 12 > (something) + 6
(something) + 6 > (something)
This is always true
Domain:
Algebraic Relations
Theme:
Inequalities
Research References:
(Lim, 2006)