1. P7.3 Demonstrate an understanding of one- and two-step linear equations of
ax
the form + c = d (where a, b, c, and d are whole numbers, c < d and b ≠ 0 )
b
by modeling the solution of the equations concretely, pictorially, physically,
and symbolically and explaining the solution in terms of the preservation of
equality.
virtual manipulative-Smart notebook generated
http://my.hrw.com/math06_07/nsmedia/tools/Algebra_Tiles/Algebra_Tiles.html
Task: Kerri is a contestant in a school spell-a-thon. A contestant receives 3
points for every word spelled correctly. Because of a technical penalty,
Kerri loses 5 points. She now has 19 points. How many words has Kerri
spelled correctly? Model the problem with algebra tiles and then use the
tiles to solve the problem. How can you use the algebra tiles to verify your
solution?