This is based on a ratio concept and Grace argues it also indicates a deeper understanding of fractions. As in the previous example, a child indicating that the uncoloured fraction of the square is three-quarters, is simplifying the denominator and numerator to give an equivalent fraction, without losing the value of the fraction, though some information is lost. When teaching fractions in schools, the emphasis is often on situations where the object can easily be cut, folded, split or coloured in equal parts. Although there is some need for this sort of activity, children should be exposed to a wide variety of situations, some where such folding or splitting strategies will not be successful. In experiencing a variety of situations where fractions can be found, learners will have the opportunity to reflect and abstract critical relations in different contextual situations. In other words, children must see a whole in all its representational forms.
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Ester Boserup 18 May  — 24 September was a Danish economist. She studied economic and agricultural development, worked at the United Nations as well as other international organizations , and wrote seminal books on agrarian change and the role of women in development. Boserup is known for her theory of agricultural intensification, also known as Boserup's theory , which posits that population change drives the intensity of agricultural production. Her position countered the Malthusian theory that agricultural methods determine population via limits on food supply.
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