Subject and verb agreement and other grammar skills.
The resources above cover the following skills:
Conventions of Standard English
Demonstrate command of the conventions of Standard English grammar and usage when writing or speaking. [L.5.1]
Explain the function of conjunctions, prepositions, and interjections in general and their function in particular sentences. [L.5.1a]
Use correlative conjunctions (e.g., either/or, neither/nor). [L.5.1e]