3R or three Rs may refer to: *

The three Rs The three Rs (as in the letter ''R'') are three basic skills taught in schools: reading, writing and arithmetic (usually said as "reading, 'riting, and 'rithmetic"). The phrase appears to have been coined at the beginning of the 19th century. Th ...

, a widely used abbreviation for the basic elements of a primary school curriculum: ''reading, 'riting (writing), and 'rithmetic (arithmetic)'' * The three Rs, a widely used abbreviation for the waste management hierarchy: ''reduce, reuse, and recycle'' * The three Rs, an abbreviation for consumer remedies under Australian Consumer Law when consumer guarantees of goods are not satisfied: ''refund, replace, and repair'' * The three Rs (animal research), principles for ethical use of animals in testing: replacement, reduction, refinement * ''The 3Rs'', an experimental short film by

David Lynch David Keith Lynch (born January 20, 1946) is an American filmmaker, visual artist and actor. A recipient of an Academy Honorary Award in 2019, Lynch has received three Academy Award nominations for Best Director, and the César Award for Be ...

* 3R (optical regenerator), an optical communications repeater that performs reamplification, reshaping, and retiming *

Intelsat 3R Intelsat 3R (formerly PAS-3R) is a communications satellite owned by Intelsat located at 43° West longitude, serving the Americas market. Satellite description PAS-3R was constructed by Hughes Aircraft Corporation, based on the HS-601 satell ...

, a former communications satellite *

Yaesu VX-3R The Yaesu VX series is a line of two sequences of compact amateur radio handheld transceivers produced by Yaesu. There is a line of ultra-compact lower-power dual-band (2 m and 70 cm) transceivers that started with the VX-1R and was la ...

, an ultra-compact dual-band amateur radio transceiver *

British Rail Class 206 The British Rail Class 206 or 3R was a type of Diesel-electric multiple unit (DEMU), introduced in 1964. They were not 'built' as such but rather re-formed from Class 201 and EPB vehicles for use on -- (North Downs Line) services. Six three-car ...

, Southern Region designation 3R from 3-car Reading Line stock *

3R (print size) Standard photographic print sizes are used in photographic printing. Cut sheets of paper meant for printing photographs are commonly sold in these sizes. Many nominal and effective sizes are specified in international standard ISO 1008 using milli ...

, a standard consumer print size for photographs * The 3Rs of Junior Forest Wardens (a Canadian outdoor-education program for families): Responsibility to yourself, Responsibility to others, Responsibility to your community and the planet *

Return, Reclamation, Rehabilitation Return, Reclamation, Rehabilitation (3R, french: Retour, Réclamation et Réhabilitation) is a rebel group in the northwestern part of Central African Republic. History The group was formed in December 2015 to protect Fulani herders from A ...

, rebel group in Central African Republic * Relief, recovery, and reform, programs that were designed under these three categories during the New Deal

See also these