three Rs

Etymology
From the initial consonant in the pronunciation of, , , 1820s.

Noun

 * 1) The basic education received in primary schools, especially (but not necessarily limited to) reading, writing and arithmetic.
 * 2)  The basic precepts of any subject matter.
 * 3)  Reduce, reuse and recycle.
 * 1)  The basic precepts of any subject matter.
 * 2)  Reduce, reuse and recycle.
 * 1)  Reduce, reuse and recycle.

Translations

 * Japanese: