In terms of mathematics logic RPN is called postfix. Normally/historically an RPN calculator has a double wide ENTER key e.g. RPN is a calculator user interface that works with an automatic stack in such a way that an equal key is meaningless to solving problems. Any term starting with Reverse isn't an attractive term so RPN students often start out with a negative bias. RPN is an acronym for Reverse Polish Notation. Many teachers may not be familiar with the HP calculator term RPN. You will save time and increase the accuracy of your work because you may go back and review/edit your values without having to re-enter them. If you have five or more values you should take the time to use List Processing. If the values are equal to the number of levels on the stack, or less, you may save time doing it the old fashioned way. The Calculator Tip is to train yourself to ALWAYS enter your numerical values into a list. The + key is then pressed N-1 times to get their total. Most users will key the value of each number, N values, followed by ENTER to place the values onto the stack. The most common use of List Processing is adding a batch of numbers. You may then sum the list (most common use), sort the list, reverse the order of the list, calculate the difference between values, multiple each value in the list, etc. Copies may be made or stored for future use. The list feature allows the data to be entered once. Data (numeric or statistical) is entered into a list and the list processed by a wide range of functions. List Processing was first offered on the HP28C in June of 1986.

One of the many very powerful features of HP's scientific/graphing calculators is list processing. Write us with your ideas for future topics including being an author yourself at: You won't find this stuff in your Owner's What is RPN? Technical article on HP's Randomness features. S08 Regular/assorted Columns From the editors.

HP launched the HP Catalyst Initiative in 2010 as described in this article. S07 HP Catalyst, Real-time assessment and applied Business Math by HP. S06 STEM is DEAD Long live STEMx by Jim Vandies who explains how the acronym STEM (Science, Technology, Engineering, and Mathematics) is no longer suitable to describe the focus of a technology driven education program. S05 Navigating the `Common Core' Maze by Kevin Regardie provides insights as to what Common Core State Standards mean. Adding an A for the Arts is advocated in this article. Most readers know that it is for Science, Technology, Engineering, & Mathematics. STEM is a buz word in the Education World. Education Moves full-'S.T.E.A.M.' Ahead! by Laura Berlins. Lesson plans and teacher aids/answers are provided. Explore the real world applications of the quadratic equation in preventing avalanches, plot a rocket trajectory, and safely launching fireworks. S03 Quadratics and Rocketry by your editor, Kevin Regardie. The history of HP Solve puts this support in historical perspective and it outlines what expected in the future. HP has been supporting its calculator users with a newsletter since September 1974. Nelson, Jessica Cespedes, & Kevin Regardie. S02 The Past, Present and Future of HP Solve by Richard J. S01 Classroom Control at the Click of a Mouse HP advances its classroom teacher support with this advanced method of putting the teacher in charge and in control. Advanced technical support for calculators will continue with at least one feature article in each issue to be included here. The HP Solve E-Newsletter is now dedicated to Teachers and STEM education. It is new because it is a new issue, and it is new because HP Solve has a new direction. It is Spring and welcome to the new issue of HP Solve. File Info : application/pdf, 27 Pages, 790.53KB Document Document S08 From the Editors V1 From The Editors Issue 31

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