Akademik

three r's
noun plural
Usage: usually capitalized R
Etymology: so called from the facetiously used phrase reading, 'riting, and 'rithmetic
1. : the fundamentals taught in elementary school; especially : reading and writing and arithmetic
2. : the fundamental skills in a field of endeavor

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1. reading, 'riting, and 'rithmetic, regarded as the fundamentals of education.
2. the fundamentals, basic knowledge, or skills of any system or field: the three R's of good government.
[1820-30]

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three R's,
reading, writing, and arithmetic.

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noun
the three R's
: the basic subjects of reading, writing, and arithmetic that are taught in school to young children

Useful english dictionary. 2012.