Lawrence Hall of Science
The Math Page: An Approach to Calculus: Continuous Versus Discrete
Here is a site that clearly and thoroughly explains the the notion that calculus is the study of continuity. This page is mostly discussion of the difference between a continuous quantity and a discrete quantity. Point this site out to...
Grammarly
Grammarly Blog: Verb Tenses: Grammar Rules
This page explains the three major verb tenses: past, present, and future with examples. It also offers links to information about each of these as well as the perfect, continuous, and perfect continuous of each.
Other
Tidewater Community College: Writing Center: Verb Tenses
Writing center guide to verb tenses that dicusses present, present continuous, past, past continuous, future, future continuous, present perfect, and past perfect.
PBS
Pbs News Hour: Afghan War Takes Toll of Civilians
Read and learn about the toll that the war in Afghanistan has taken on the civilian population. (21 August 2009)
Shmoop University
Shmoop: Adding and Subtracting Limits Examples
Examples of addition and subtraction with limits including solutions to the example problems.
Khan Academy
Khan Academy: Progressive Verb Aspect
When something is ongoing, we say that it's in the 'progressive' or 'continuous' aspect. Test your knowledge of this grammatical aspect!
CK-12 Foundation
Ck 12: Fourth Grade Science: Earth Science: Relative Ages of Rocks
[Free Registration/Login may be required to access all resource tools.] Looks at how stratigraphy can be used to determine the relative ages of rocks, how unconformities occur, ways to match rock layers in different areas, and how...
English Club
English Club: Learn English: Grammar: Verbs: Future Time
An explanation of future time with links to addition information on present continuous, present simple, future time, and more.
Mocomi & Anibrain Digital Technologies
Mocomi: Past Tense and Its Types
Defines past tense and provides examples of the different types.
Mocomi & Anibrain Digital Technologies
Mocomi: Future Tense and Its Types
Learn about future tense and its types.