This site defines and discusses the ideal gas law. The concept of state variables is explained and the various state variables are identified. Links to further information is available.

The purpose of this task is to identify the structure in the two algebraic expressions by interpreting them in terms of a geometric context, a series of squares filled with dot arrangements. Students are asked to notice a pattern and...

This task about the height of a horseshoe in flight requires students to identify expressions as sums or products and interpret each summand or factor. Aligns with A-SSE.A.1.

In this task, students use the structure of an expression to find ways to rewrite it. They are asked to use the defining property of even and odd functions to manipulate expressions involving function notation and to see the structure in...