It is a challenge for mathematics teachers to provide activities for their students at a high level of cognitive demand. In this article, we explore the possibilities that history of mathematics has to offer to meet this challenge. History of mathematics can be applied in mathematics education in different ways. We offer a framework for describing the appearances of history of mathematics in curriculum materials. This framework consists of four formats that are entitled speck, stamp, snippet, and story. Characteristic properties are named for each format, in terms of size, content, location, and function. The formats are related to four ascending levels of cognitive demand. We describe how these formats, together with design principles that are also derived from the history of mathematics, can be used to raise the cognitive level of existing tasks and design new tasks. The combination of formats, cognitive demand levels, and design principles is called the 4S-model. Finally, we advocate that this 4S-model can play a role in mathematics teacher training to enable prospective teachers to reach higher cognitive levels in their mathematics classrooms.
This article argues for an updated theoretical framework in fashion studies. It proposes that perspectives emphasizing the social role and the technological nature of dress should be considered complementary, and that their joint application can contribute to new understandings of fashion history. Employing ethnographic methods, this stance is explored through a comparative analysis of the sartorial practices of two groups of women living or working in Amsterdam during the 1950s and the 2010s. A theoretical framework integrating theories of identity (mainly based on the writings of Georg Simmel and Gabriel Tarde) and the philosophy of technology (in this case the device paradigm of Albert Borgmann) allows us to uncover a paradoxical history of fashion in which clothing shifts roles, transforming from “things of imitation” into “devices of differentiation.”
The European eel (Anguilla anguilla) is a delicacy fish and an integral part of the Dutch culinary history. However, the stock of adult eel has decreased significantly due to a precipitous recruitment of glass eel fall. This relates to multiple factors including obstacles in migration pathways, loss of habitat and chemical pollution. Consequently, Anguilla anguilla has become a critically endangered species and is protected under European legislation. One possible solution, explored on laboratory scale, is the captive reproduction of eels and growth of glass eel in aquaculture. A big challenge of this technique is the limiting aspect of possible nutrients for the eels in the larval stage, as the diet must be delivered in micrometric capsules (< 20 µm) with a high protein content. Such diets are not yet available on the market. Electrohydrodynamic atomization (EHDA) is a novel option to prepare a micro-diet suitable for eel larvae. EHDA is especially interesting for its narrow size distribution capabilities and for applications which require submicrometric sizes. This project aims to evaluate the use of EHDA to produce high protein content micrometric size capsules for feeding larval eels. If successful, this would assist in the captivity production of glass eel and to make the eel culture independent of wild catches, restoring the culinary market. The project will be conducted in two phases. Firstly, tests will be conducted to evaluate the necessary conditions of the capsules using EHDA. Subsequently, the obtained capsules will be tested as feed for eel larvae. The main objective is to favour the development of a more sustainable eel culture, regarding the possibilities of investigating the current fish in natura option and exchanging it for a captivity one.
Society continues to place an exaggerated emphasis on women's skins, judging the value of lives lived within, by the colour and condition of these surfaces. This artistic research will explore how the skin of a painting might unpack this site of judgement, highlight its objectification, and offer women alternative visualizations of their own sense of embodiment. This speculative renovation of traditional concepts of portrayal will explore how painting, as an aesthetic body whose material skin is both its surface and its inner content (its representations) can help us imagine our portrayal in a different way, focusing, not on what we look like to others, but on how we sense, touch, and experience. How might we visualise skin from its ghostly inner side? This feminist enquiry will unfold alongside archival research on The Ten Largest (1906-07), a painting series by Swedish Modernist Hilma af Klint. Initial findings suggest the artist was mapping traditional clothing designs into a spectral, painterly idea of a body in time. Fundamental methods research, and access to newly available Af Klint archives, will expand upon these roots in maps and women’s craft practices and explore them as political acts, linked to Swedish Life Reform, and knowingly sidestepping a non-inclusive art history. Blending archival study with a contemporary practice informed by eco-feminism is an approach to artistic research that re-vivifies an historical paradigm that seems remote today, but which may offer a new understanding of the past that allows us to also re-think our present. This mutuality, and Af Klint’s rhizomatic approach to image-making, will therefore also inform the pedagogical development of a Methods Research programme, as part of this post-doc. This will extend across MA and PhD study, and be further enriched by pedagogy research at Cal-Arts, Los Angeles, and Konstfack, Stockholm.
Kumasi and RokitScience contribute to increasing the ownership and income of cocoa farmers, with an emphasis on women. Kumasi has a successful history of developing and marketing cocoa juice, which aims to keep as much income as possible with the farmer. RokitScience has been involved in the creation of the Rokbar: a "bean to bar" empowering chocolate bar that is marketed and made entirely by women. Kumasi and RokitScience started setting up a cocoa-fruit-lab at the cocoa-cooperative COVIMA in early 2021 in Ivory-Coast, in collaboration with Beyond Beans Foundation/ETG and Döhler and financially supported by the Sustainable-Trade-Initiative (IDH). The goal is to support the cooperative, which is led by women, with the establishment of circular cocoa juice and chocolate production and in this way increase the income of the members of the cooperative. The cocoa pod contains cocoa beans embedded in cocoa pulp. This pulp is sweet and juicy and partly needed for cocoa bean fermentation for flavor development. Residual pulp can be used for new products like drinks, marmalades and more. The collaboration in the cocoa fruit lab created momentum to try-out a more circular approach whereby the extraction of juice was linked to a shorter fermentation period of the beans, influencing quality features of both the beans and potentially the chocolate. However, to optimize the production of juicy beans further and find a market for this (and potentially other) products requires further testing and development of a value proposition and marketing strategy. The main question of Kumasi and RokitScience at Hanzehogeschool Groningen and NHLStenden Hogeschool Amsterdam is: What is the effect on the quality of beans and chocolate if fermented after the extraction of juice? How can this be optimized: comparing ‘cocoa of excellence’ fermentation and drying to traditional post-harvest practices and how can we tell the world?
