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An open textbook is a textbook licensed under an open license, and made available online to be freely used by students, teachers and members of the public.Many open textbooks are distributed in either print, e-book, or audio formats that may be downloaded or purchased at little or no cost.
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In mathematics, differential calculus is a subfield of calculus that studies the rates at which quantities change. [1] It is one of the two traditional divisions of calculus, the other being integral calculus—the study of the area beneath a curve.
Botany, also called plant science or phytology, is the branch of natural science and biology studying plants, especially their anatomy, taxonomy, and ecology. [1] A botanist, plant scientist or phytologist is a scientist who specialises in this field.
Tsonga (/ ˈ (t) s ɒ ŋ ɡ ə / ⓘ (T)SONG-gə) or, natively, Xitsonga, as an endonym, is a Bantu language spoken by the Tsonga people of South Africa.It is mutually intelligible with Tswa and Ronga and the name "Tsonga" is often used as a cover term for all three, also sometimes referred to as Tswa-Ronga.
A Transformation Approach to Tenth Grade Geometry, The Mathematics Teacher, Vol. 65, No. 1 (January 1972), pp. 21-30. Zalman P. Usiskin. The Effects of Teaching Euclidean Geometry via Transformations on Student Achievement and Attitudes in Tenth-Grade Geometry, Journal for Research in Mathematics Education, Vol. 3, No. 4 (Nov., 1972), pp. 249-259.
Thwala began his acting career in 1989. [3] He made his screen acting debut in the 1996 made-for-TV movie Born Free: A New Adventure. In the same year, he played a cameo in an episode of the television series Tarzan: The Epic Adventures entitled “Tarzan and the Scarlet Diamond” (Season 1, Episode 5).In 1998 he was offered the role of Godlieb Mofokeng in the new SABC 3 soapie Isidingo but ...