The number we call π has a long and varied history. In this article we look at its early origins, using Egyptian, Babylonian and Greek sources from more than two thousand years ago. These sources offer wonderful opportunities to introduce meaning and value in a first grade class, even without the need …

In dit praktijkgericht onderzoek staat de relatie tussen rekenen en taal centraal. De verlegenheidssituatie heeft duidelijk gemaakt dat zwakke lezers een andere didactische aanpak nodig hebben om vaardiger te worden in het oplossen van toepassingsopgaven. Na bestudering van de theorie gericht op toepasbare …

The Northern region of the Netherlands has beautiful landscapes, a nice diversity of green and blue areas, and dispersed settlements. However, some recent population changes can become threats to health and wellbeing in these areas. The rural areas in the three northern provinces - Groningen, Friesland …

In the Silicon Venturing Rotterdam Innovation Lab (SVR), the students set up a student innovation company alongside the hospital. This venture is coached by RUAS tutors in close consultation with the contact person at the hospital. The “free” and challenging setup of the Innovation Lab offers the students …

This article presents a model for conducting contextual therapy with the aim of contributing to the further development of contextual therapy. Its founder, Ivan Boszormenyi-Nagy, introduced the core of this approach, relational ethics, as a new paradigm for family therapy, which has been received well. …

Throughout the last three decades, mathematics educators have expressed high expectations of the benefits of using digital technology in mathematics education. In retrospect, however, we admit that this integration has not always been as successful and as smooth as we hoped for. What were the main phases …

Mobile Rapid DNA technology is close to being incorporated into crime scene investigations, with the potential to identify a perpetrator within hours. However, the use of these techniques entails the risk of losing the sample and potential evidence, because the device not only consumes the inserted sample, …

EXECUTIVE SUMMARY Because of the enormous growth of the aviation industry, Schiphol requires to expand its operations. The limitation of 500,000 aircraft movements led to an agreement about the expansion of a regional airport to accommodate the overcapacity of Schiphol Airport. Lelystad Airport was chosen …

The natural gas/diesel dual-fuel engine is an interesting technique to reduce greenhouse gas emission. A limitation of this concept is the emission of un-combusted methane. In this study we analyzed the influence of PFI gas-injection timing on cylinder to cylinder gas-distribution, and the resulting …

Het plan geeft een overzicht van wat mogelijk is om een gup te realiseren op de meest geschikte locatie Koudenhorn. De plattegrond hieronder geeft een beeld van hoe de ruimte te verdelen is. Enkele close-ups geven een beter inzicht over de functie van elke ruimte. De nodige vervolgonderzoeken worden …