CK-12 Foundation
Ck 12: Biology: Pregnancy and Childbirth
[Free Registration/Login may be required to access all resource tools.] Overview of pregnancy and childbirth.
Sophia Learning
Sophia: Apostrophes: Tutorial
In this slideshow tutorial, the punctuation topic of "the apostrophe" is reviewed. Each slide provides a different purpose for using an apostrophe.
Education Development Center
Tune in to Learning: Grammar and Punctuation
Discover more about grammar and punctuation when you check out this comprehensive site. This site gives a tutorial on correct grammar usage.
Lumen Learning
Lumen: Grammar: Punctuation
This lesson focuses on the roles of all of the punctuation marks; it provides a video, small practices in various sections, and a punctuation self-check.
Khan Academy
Khan Academy: Apostrophe Use Quick Guide
A short guide on how to use apostrophes correctly.
![Exploratorium: Traits of Life: How Does a Muscle Work? [Pdf] Graphic](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Exploratorium: Traits of Life: How Does a Muscle Work? [Pdf] Graphic")
Exploratorium
Exploratorium: Traits of Life: How Does a Muscle Work? [Pdf]
Poster illustrates how muscles turn energy into movement.
Other
Fear of Physics: Albert Einstein's Theory of Relativity
Fear of Physics uses animations and simple language to teach the theory of relativity.
Other
Walter Fendt: Ejemplo De Dilatacion Del Tiempo
This simulation shows that the ship clock goes slower than the two clocks of the system Earth and Pluto. This site is best viewed with Internet Explorer.
Sophia Learning
Sophia: Animals: Human Muscular System: Lesson 2
This lesson provides an overview that explains the muscular system in humans. It is 2 of 4 in the series titled "Animals: Human Muscular System."
Sophia Learning
Sophia: Animals: Human Muscular System: Lesson 4
This lesson provides an overview that explains the muscular system in humans. It is 4 of 4 in the series titled "Animals: Human Muscular System."
Sophia Learning
Sophia: Animals: Human Muscular System: Lesson 1
This lesson provides an overview that explains the muscular system in humans. It is 1 of 4 in the series titled "Animals: Human Muscular System."
Sophia Learning
Sophia: Apostrophes: Lesson 13
This lesson introduces apostrophes and how they are used. It is 13 of 13 in the series titled "Apostrophes."
Sophia Learning
Sophia: Apostrophes: Lesson 9
This lesson introduces apostrophes and how they are used. It is 9 of 13 in the series titled "Apostrophes."
Soft Schools
Soft Schools: Possesives Examples
Resource provides an explanation and examples of possessive nouns.
Sophia Learning
Sophia: Common Issues With Apostrophes: Lesson 3
This lesson explores common errors made with apostrophes and how to correct them. It is 3 of 3 in the series titled "Common Issues with Apostrophes."
Sophia Learning
Sophia: Grammar and Formality
This lesson goes over ways in which the correct use of grammar may be perceived as formality. CCSS.ELA-Literacy.CCRA.L.1 and CCSS.ELA-Literacy.CCRA.SL.6, L.11-12.1a Gram/Usage changes
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