Archiv der Kategorie C.a.R. – Z.u.L.

Two Tilted Rectangles

I found this problem from the wonderful Math with bad Drawings site in my news feed. They cite it from Carolina Shearer. Her twitter account contains more such nice problems. It is the kind of problem which seems only adequate … Weiterlesen

05. November 2019 von mga010
Kategorien: C.a.R. - Z.u.L., English, Euler | Schreibe einen Kommentar

The Problem with recent Java Updates

It is fair to say that Oracle is not treating Java well. After the Ask-bar annoyance it is now bugging Java users with a faulty installation of the recent Java update. No surprise that Java loses more and more ground. … Weiterlesen

17. August 2015 von mga010
Kategorien: C.a.R. - Z.u.L., English | Schreibe einen Kommentar

C.a.R. / Z.u.L. and Java Permissions

Thanks to the fine people at our university we have now enabled the applets on the pages of C.a.R. (Compass and Ruler) and Z.u.L. (Zirkel und Lineal). The user does no longer have to put the site into the list … Weiterlesen

16. Januar 2015 von mga010
Kategorien: C.a.R. - Z.u.L., English | Schreibe einen Kommentar

Compass and Ruler – C.a.R. – Geometry Software

I have often spoken and written about computers in schools. E.g., see this paper for a conference in Rio. It is clear that software in schools is inevitable and necessary. It is also clear that it has its problems. Most … Weiterlesen

30. Dezember 2014 von mga010
Kategorien: C.a.R. - Z.u.L., English | Schreibe einen Kommentar

Christmas Star

Ron Gerber sent me the same image, which he produced using my C.a.R. geometry program. I though Euler Math Toolbox might be a better choice. So I reproduced his image with EMT. First of all, the command necessary for this … Weiterlesen

18. Dezember 2013 von mga010
Kategorien: C.a.R. - Z.u.L., English, Euler | Schreibe einen Kommentar

Problems with Java and local Applets

One user wrote to me because he had problems with the HTML export of C.a.R. constructions. Indeed, there are two problems. The security restrictions of Java forbid starting self signed applets on local web sites. The C.a.R. applet can not … Weiterlesen

27. August 2013 von mga010
Kategorien: C.a.R. - Z.u.L., English | 1 Kommentar

A Circle – or not?

In this video by H. Bortolossi I found an interesting problem. I do not understand all of the Portuguese, but the video was interesting nevertheless for me. Also it was nice to see my friend from Rio in action. This … Weiterlesen

25. August 2013 von mga010
Kategorien: C.a.R. - Z.u.L., English, Euler | Schreibe einen Kommentar