There is an amazing amount of great Math resources for helping teachers,students,or schools with Math. Here is a list of resources to help with Common Core standard A.SSE.1. The standard deals with writing and interpreting expressions.
Interpret the Context of Expressions
A nice collection of worksheets covering expressions.
Structure in Expressions Worksheet
Converting statements into Mathematical expressions.
Structure in expressions video
MAP Lesson covering interpreting algebraic expressions
Interpreting Algebraic Expressions
Interpreting expressions Khan Academy
Writing numerical expressions
Student aligned lesson from the Pennsylvania department of education.
Let's help each other. If you have any helpful resource that you have used with this standard please leave a comment.
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Interactive Common Core Spreadsheet