Khan Academy
Khan Academy: Parallel Structure
Parallel structure is a stylistic choice to make verbs in a sentence maintain a pattern.
Alabama Learning Exchange
Alex: Identifying Parallel Structure in Sentences
After textbook and online instruction in parallel construction, learners examine "Lincoln's Gettysburg Address" and the Declaration of Independence for parallelism before writing their own paragraphs.
Other
Bellevue Community College: Writing Lab: Parallelism [Pdf]
A printable guide with explanations and examples of sentences with and without parallel structure. Requires Adobe Reader. [PDF] L.9-10.1a Parallelism
Capital Community College Foundation
Guide to Grammar and Writing: Parallel Form
This site from the Capital Community College defines the term and gives many examples of faulty parallelism and the corrected version of sentences. Includes links to a couple of quizzes at the bottom of the page. "Most of the...