Common Core Standards
Grade 5
Language L.5.6
Acquire and accurately use grade-appropriate general academic and domain-specific words and phrases, including those that signal contrast, addition, and other logical relationships (e.g., however, although, nevertheless, similarly, moreover, in addition).
As a whole, the fifth grade Common Core Standards for Language emphasize your students' ability to think logically about language, especially when using it to compare or contrast two things or concepts. Things are getting real, folks. This standard breaks this concept down to its most basic level, asking students to understand and correctly employ words that denote logical relationships.