Writing the conclusion of an essay can often seem like a superfluous or daunting task. Support your young writers in understanding the various types and purposes of a conclusion paragraph, such as summarizing key points of a paper or...

What does order of operations have to do with solving equations? A video explains solving two-step equations using a do/undo chart. Learners recognize the operations within an equation and use inverse operations to undo those...

This entry focuses on verb tense consistency in sentences, paragraphs, and essays by explaining the importance of maintaining verb tense throughout each and providing examples of each.

Maintained by the Purdue University Writing Lab, this tutorial focuses specifically on the three prepositions mentioned in the title: "at", "in", and "on". Explains spatial relationships and examines "in" and "on" more closely.

Maintained by the Purdue University Writing Lab, this tutorial focuses specifically on the three prepositions mentioned in the title. After a general introduction, the site specifically discusses each preposition and presents examples.