22
Center for the Mathematics
Education of Latinos/as
TeachersÕ Strategies
¥
Common algebraic problem solving strategy
¥
6+7+8+9+10 = 6+
8
+8+
8
+10 =
8
+8+8+8+
8
= 5(8)
¥
6+7+8+9 =
7
+7+8+
8
= 4(7.5)
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Common visual strategy
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(4 consecutive)
¥
My favorite strategy
–
x + (x + 1) + (x + 2) + (x + 3)
= 4x + 6 = 4(x + 1) + 2
–
=
2
more than a multiple of
4
Sum / 4
2
nd
integer
1
st
integer
3
rd
integer
4
th
integer
9
8
7
6