Complex Numbers
(View Complete Item Description)This 4-minute video lesson introduces Khan's series on complex numbers.
Material Type: Lecture
This 4-minute video lesson introduces Khan's series on complex numbers.
Material Type: Lecture
This 4-minute video lesson looks at the imaginary roots of negative numbers.
Material Type: Lecture
This single minute video lesson looks at how to add complex numbers.
Material Type: Lecture
This 2-minute video lesson explains how to subtract complex numbers.
Material Type: Lecture
This 6-minute video lesson explains how to multiply complex numbers.
Material Type: Lecture
This 5- minute video lesson shows how to divide complex numbers.
Material Type: Lecture
This 4-minute video lesson give an example of a complex conjugate.
Material Type: Lecture
This site from the BBC hosts a brief primer on the Arabic language. It discusses such topics as where the language is spoke, where it came from, and tips on etiquette. The guide also includes interesting examples of the Arabic language, such as tongue twisters, jokes, and famous quotations.
Material Type: Activity/Lab, Reading
This site contains numerous audio, and video files, grouped by topic, of subjects speaking Jordanian colloquial Arabic. There are also a few images and informational links interspersed throughout the site. Each video is available for download and accompanied by an Arabic transcript and an English translation. Videos are based on every day topics like greetings, farewells, shopping, and transportation.
Material Type: Lecture
This is a blog that links to videos, music, and other information about studying and learning Arabic. The blog provides comments on information provided. For instance, there is a link to an episode of The Simpsons in Arabic while providing sentences and translations of some of the more complicated phrasing.
Material Type: Reading
Arabalicious is a website full of resources for teachers of Arabic, run by Taoufiq Cherkaoui. The website includes PowerPoints available for download on concepts such as telling time, fruits and vegetables, culture, and basic greetings, to name a few. Worksheets to go along with the PowerPoints are also available for free download. The website further includes pictures that are available with the author's permission and some postings on available jobs for Arabic instructors as per 2012.
Material Type: Activity/Lab
This funny song by Lebanese singers describes their ride on camels through the center of Beirut. The video shows images of downtown Beirut and how unusual it is for camels to be in a big city in the Arab world.
Material Type: Primary Source
CK-12 Biology Workbook complements its CK-12 Biology book.
Material Type: Activity/Lab, Textbook
Biology is designed for multi-semester biology courses for science majors. It is grounded on an evolutionary basis and includes exciting features that highlight careers in the biological sciences and everyday applications of the concepts at hand. To meet the needs of today’s instructors and students, some content has been strategically condensed while maintaining the overall scope and coverage of traditional texts for this course. Instructors can customize the book, adapting it to the approach that works best in their classroom. Biology also includes an innovative art program that incorporates critical thinking and clicker questions to help students understand—and apply—key concepts.
Material Type: Full Course
Biology is the study of life; however, there is more to it than this simple definition. In this seminar, you will be investigating the Unifying Principles of Biology. For example, changes and adaption of life are observed in nature. Regardless of the organism, those that are the best adapted will survive. This unifying principle and several others will be explored in this seminar.StandardsBIO.A.1.1 Describe the characteristics of life shared by all prokaryotic and eukaryotic organisms.
Material Type: Lesson Plan
Submitted as part of the California Learning Resource Network (CLRN) Phase 3 Digital Textbook Initiative (CA DTI3), CK-12 Foundation’s high school Biology FlexBook covers cell biology, genetics, evolution, ecology, botany, zoology, and physiology. This digital textbook was reviewed for its alignment with California content standards.
Material Type: Textbook
The Genetics Student Edition book is one of ten volumes making up the Human Biology curriculum, an interdisciplinary and inquiry-based approach to the study of life science.
Material Type: Activity/Lab, Textbook
This 14-minute video lesson presents an overview of photosythesis. [Biology playlist: Lesson 28 of 71].
Material Type: Lecture
Students set up a simple way to indirectly observe and quantify the amount of respiration occurring in yeast-molasses cultures. Each student adds a small amount of baking yeast to a test tube filled with diluted molasses. A second, smaller test tube is then placed upside-down inside the solution. As the yeast cells respire, the carbon dioxide they produce is trapped inside the inverted test tube, producing a growing bubble of gas that is easily observed and measured. Students are presented with the procedure for designing an effective experiment; they learn to think critically about experimental results and indirect observations of experimental events.
Material Type: Activity/Lab, Lesson Plan
By the end of this section, you will be able to:Identify and describe the properties of lifeDescribe the levels of organization among living thingsRecognize and interpret a phylogenetic treeList examples of different sub disciplines in biology
Material Type: Module