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Cuisenaire rods illustrating the factors of ten A demonstration the first pair of amicable numbers, (220,284). Cuisenaire rods are mathematics learning aids for pupils that provide an interactive, hands-on [1] way to explore mathematics and learn mathematical concepts, such as the four basic arithmetical operations, working with fractions and finding divisors.
Georges Cuisenaire (1891–1975), also known as Emile-Georges Cuisenaire, [1] was a Belgian teacher who invented Cuisenaire rods, a mathematics teaching aid. Life [ edit ]
Demonstration, with Cuisenaire rods, of the first four highly composite numbers: 1, 2, 4, 6. A highly composite number is a positive integer that has more divisors than all smaller positive integers. If d(n) denotes the number of divisors of a positive integer n, then a positive integer N is highly composite if d(N) > d(n) for all n < N.
Here, Cuisenaire rods are used, particularly with beginners, to create visible and tangible situations from which the students can induce the structures of the language. The silence of the teacher both gives the students room to explore the language and frees the teacher to observe the students.
An editor of this page is convinced that the 4 cm rod is Crimson. This is not borne out by examination. The colour is typically described in official literature as “purple” (US; see example ETA/Cuisenaire® worksheet: One-Color Rod Trains) or “pink (purple)” (UK; product description, International Set Plastic Cuisenaire® Rods).
A set of Cuisenaire rods. The silent way makes use of specialized teaching materials: colored Cuisenaire rods, the sound-color chart, word charts, and Fidel charts. The Cuisenaire rods are wooden or plastic, and come in ten different lengths, but identical cross-section; each length has its own assigned color. [25]
Cuisenaire rods: 5 (yellow) cannot be evenly divided in 2 (red) by any 2 rods of the same color/length, while 6 (dark green) can be evenly divided in 2 by 3 (lime green). In mathematics, parity is the property of an integer of whether it is even or odd. An integer is even if it is divisible by 2, and odd if it is not. For example, −4, 0, and ...
Demonstration, with Cuisenaire rods, of the divisors of the composite number 10 Composite numbers can be arranged into rectangles but prime numbers cannot. A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Accordingly it is a positive integer that has at least one divisor other than 1 and ...