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Cuisenaire rods
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Cuisenaire rods are mathematics learning aids for students that provide a hands-on elementary school way to explore mathematics and learn mathematical concepts, such as the four basic arithmetical operations, working with fractions and finding divisors. In the early 1950s, Caleb Gattegno popularised this set of coloured number rods created by the Belgian primary school teacher Georges Cuisenaire (1891-1975), who called the rods ''réglettes''.
==History==
Cuisenaire rods were devised in the 1920s by the wife of Georges Cuisenaire, a Belgian educator. Similar to how written musical notes make music visible, Cuisenaire rods were designed to make mathematics visible by using wooden rods of varying lengths and colours. By 1931, the Cuisenaire rods, which were then known as réglettes, had been improved and the use of Cuisenaire rods in the 1930s by Cuisenaire at one primary school in Thuin, Belgium led to others seeing that school as one where students "learned mathematics faster than most other students in the world."〔 In 1953,〔 Egyptian-born, British mathematician and education specialist Caleb Gattegno named the math devices "Cuisenaire rods" and began popularizing these visual aids since he believed the rods allowed students "to expand on their latent mathematical abilities in a creative and enjoyable fashion."〔 Gattegno's formed the Cuisenaire Company in 1954 and, by the end of the 1950s, Cuisenaire rods had been adopted by teachers in 10,000 schools in more than 100 countries.〔 The rods received wide use in the 1960s and 1970s.〔 However, by the 1980s, most schools which previously used Cuisenaire rods stopped〔 using them. In 2000, the United States-based company Educational Teaching Aids (ETA) acquired the Cuisenaire Company and formed ETA/Cuisenaire to sell Cuisenaire rods related material. In 2004, Cuisenaire rods were featured in an exhibition of paintings and sculptures by New Zealand artist Michael Parekowhai.〔 In 2013, Lugano, Switzerland based company Primo developed Cubetto, a robot designed to teach four-year-olds computer programming similar to how five-year-olds in the 1960s were taught math using Cuisenaire rods.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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