Math Words
Math words.com: Continuous Function
This site defines what a continuous function is. It also gives the conditions that must be present for a function to be continuous at x = a.
Sophia Learning
Sophia: Verb Tenses
This slideshow lesson focuses on 12 verb tenses by providing background and examples of each. The 12 verb tenses are as follows: present, present continuous, present perfect, present perfect continuous, past, past continuous, past...
Grammarly
Grammarly Blog: Present Perfect Continuous(present Perfect Progressive)tense
An explanation with examples of present perfect progressive verb tense in sentences.
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.
Other
Mr. Fraiha's 4th Grade e.l.a. Website: Progressive Verb Tenses
Learn about progressive verb tenses (present progressive, present continuous, past progressive, past continuous, future progressive, and future continuous) by reading, watching a video [0:52] and taking short online quizzes.
Mocomi & Anibrain Digital Technologies
Mocomi: Present Tense and Its Types
Learn about present tense and its types.
English Page
Englishpage.com: Present Conditionals
Tutorial on present conditional verb forms and their use with examples and related links to exercises.
Interactive Mathematics
Interactive Mathematics: Limits
Beginning with a discussion on continuity, this site introduces the concept of limits. Several examples are presented, some of which allow you to work the problem yourself before seeing the problem. Graphs are included on several of the...
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!
Online Writing Lab at Purdue University
Purdue University Owl: Sequence of Tenses
This Purdue University tutorial covers active and passive voices through simple examples.
English Club
English Club: Basic Tenses: Regular Verbs
Notes and examples of verb tense including past, present, future, past participle, present participle, simple, continuous, perfect, and continuous perfect.
English Club
English Club: Basic Tenses
Notes and examples of verb tense including past, present, future, active, passive, normal, intensive, continuous, perfect, and continuous perfect.
Interactive Mathematics
Interactive Mathematics: Probability Distribution
The concept of random variables is the focus of this lesson, including definitions of discrete and continuous random variables. Discussions on discrete probability distribution and density function are included, along with expected value...
Grammarly
Grammarly Blog: Verb Conjugation Grammar Rules
This page explains verb conjugations including persons: first, second, and third person; number: singular and plural; and tenses: present, past, and future and simple, continuous, and perfect. It provides examples of verb conjugations.
CK-12 Foundation
Ck 12: Probability: Exponential Distributions
[Free Registration/Login may be required to access all resource tools.] Covers exponential distributions. Presents examples using a graphing calculator as well as guided and independent practice questions.
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.
Grammar Tips
Grammar Tips: Problematic Word Pairs: Part I
Certain word pairs present problems for many speakers and writers such as amount versus number, continuous versus continually, and so on. This three-part article identifies problematic word pairs and clarifies their proper use.
Curated OER
Educational Technology Clearinghouse: Maps Etc: North China, 1971
" North China includes the densely populated and intensively cultivated North China Plain, the loess-covered uplands of Shansi, northern Shensi, and eastern Kansu, and the sparsely populated, semiarid steppes of Inner Mongolia....
Curated OER
Etc: Maps Etc: Physical Map of South America, 1898
A map from 1898 of South America showing the general physical features including mountain systems, prominent peaks and volcanoes, river and lake systems, plateaus, and coastal features. The map includes an insert of the Isthmus of...
Curated OER
Unesco: Sweden: Agricultural Landscape of Southern Oland
The southern part of the island of Oland in the Baltic Sea is dominated by a vast limestone plateau. Human beings have lived here for some five thousand years and adapted their way of life to the physical constraints of the island. As a...
Curated OER
Wikipedia: National Historic Landmarks in Massachusetts: Lowell's Boat Shop
Founded in 1793, this boatshop has been in continuous business ever since; it is where founder Simeon Lowell developed the stackable dory. The present buildings date from the 1860s.
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