Algebra arrows: Background Information

Summary  With this applet you can make arithmetic arrows. Input/Output fields (white) can be connected to operation fields (yellow) using arrows. From an operation field an arrow can be drawn to an input/output field to show the results. With the results you can calculate further. See also the applet Algebra Trees. 
Subject  algebra, calculus 
Age Group  middle school (gr. 78)  high school (gr. 910)  high school (gr. 1112) 
Programmer  Peter Boon 
Author  Peter Boon 
Version  revised version 