
06617849
j
2016e.00775
Foster, Colin
Expression polygons.
Math. Teach. (Reston) 109, No. 1, 6265 (2015).
2015
National Council of Teachers of Mathematics (NCTM), Reston, VA
EN
H33
D53
linear equations
formative assessment
elementary algebra
manipulation of expressions
solving equations
student activities
problem posing
polygons
creativity
problem solving
discussion
From the text: Solving linear equations, an important mathematical technique at the core of the Algebra 1 curriculum, forms an essential foundation for more advanced work. Too often, developing fluency with linear equations entails plowing through pages of repetitive exercises. How can students master this topic while using their mathematical sensemaking faculties? In addition to generating essential practice with the technique of solving linear equations, this lesson on expression polygons engages students in authentic mathematical thinking. The expression polygon task is a rich task that students of all ages from grade 6 upward can access.