3.3
2023-03-11
Doing arithmetic is simpler in this release: just double-tap the root node of a subexpression to evaluate. The old way of doing it (drag down into Green Mode) provided a feature no one uses. Green Mode still works for now, but will be delete from a future version.
Sometimes you need to invent a term inside an equation. For example, you might need to add 1 to make something work. Of course, this means you must subtract 1 someplace else to keep everything in balance. So flick right where you need this new term to appear, then enter what you need to invent and click the new relationship. Give it a try!
3.2
2022-12-02
DragginMath's input notation for logarithms has been improved, along with some bug fixes.
3.1.1
2022-11-02
Solving equations in DragginMath has always been easy: drag operands up onto the equal sign. For example, to solve x+3=y for x, drag 3 up onto = to see x=y-3. But some teachers think this is too helpful. At the very beginning of algebra instruction, it might be better to show x+3-3=y-3, then leave the user to clean up the +3-3. Version 3.1 has a new Solve switch. Choose Solve Full for the classic DragginMath behavior that cleans up for you, doing more with less work. Or chose Solve Part to see and understand all the details when you're just getting started.
Sometimes you discover your current expression needs to be included within some larger expression. So tap the top text to start a new expression, then enter empty parentheses ( ) to insert a copy of the previous expression into the new expression. No more retyping!
Transform equations using a new feature that looks suspiciously like the Distributive Property, but for operators over relations. For example, if you have the equation y=mx+b and you need to multiply both sides by 3, then add 1 to both sides, enter 3*(y=mx+b)+1. Now drag = up onto +. See the result 3y+1=3(mx+b)+1. Works for all operators over all relations, not just =.
New layout parameters allow you to work on problems almost twice as large.
3.0.1
2022-08-01
DragginMath 3.0 is mostly about an improved user interface.
It looks a little different: our homegrown math font was replaced with a standard math font. The app's behavior is not affected by this visual change.
Touching any part of an algebraic picture highlights the corresponding symbols in the algebraic text.
Any part of the algebraic picture can now be compressed into a traditional line of symbols by flicking up on it. Then flick down to convert it back into picture.
Left-handed users finally get some respect: choose a left-handed screen layout if you prefer that.
DragginMath has always had different screen layouts for iPad and iPhone. iPad Mini now uses the iPhone layout.
And, of course, improvements to the algebra.
3.0
2022-07-31
DragginMath 3.0 is mostly about an improved user interface.
It looks a little different: our homegrown math font was replaced with a standard math font. The app's behavior is not affected by this visual change.
Touching any part of an algebraic operator tree highlights the corresponding symbols in the algebraic text.
Any part of an operator tree can now be compressed into a traditional line of symbols by flicking up on it. Then flick down to convert it back into an operator tree.
Left-handed users finally get some respect: choose a deliberately left-handed screen layout if you prefer that.
DragginMath has always had different screen layouts for iPad and iPhone. iPad Mini now uses the iPhone layout.
And, of course, improvements to the algebra.
2.4
2021-12-29
Better visualization of expression parsing.
More logarithmic transformations.
2.3
2021-12-06
Double-tap numbers to factor into primes.
Improved algebraic replication.
A factorial operator!
2.2
2021-11-04
The Distributive Property and its relatives are now more powerful and easier to use. You can still do the specific distributions found in earlier versions, or you can do general distributions based on what the app finds throughout the operator tree. Also, you won't notice some bug fixes because those bugs are no longer there!
2.1
2021-08-05
V2.1 has more ways to use unary operators: drag them up and down the operator tree to the most useful place, but only ever to a correct place. Also, usability improvements for annotations.
2.0
2021-08-02
V2.0 does more and better algebra. Absolute Value using the ‖ operator. More useful behavior for ±. Improvements to existing algebraic behavior.
Animated Redo - V1.0 redo only showed the results of changes to your equations. V2.0 Animated Redo shows you which operator or operand initiated a change, which operator was the target of the change, and then animates the change just as if your finger was doing the work.
Annotated Demonstrations - Teachers or curriculum developers can optionally add annotations before and/or after each problem step. These are remembered in DragginMath files along with the algebra. Together with Animated Redo, this makes DragginMath an even better tool for remote instruction.
Email Conversations - Teachers can send DragginMath file attachments to their students, who watch Annotated Demonstrations using Animated Redo, then work on problem sets. When complete, DragginMath makes it easy for students to email their work back to the teacher. Emails are conveniently titled to help teachers with assignment management. This is seamlessly integrated with the iOS Mail app.