The document discusses updates to the Touch of Math application. It summarizes that the backend has been rewritten with improved data structures, XML handling, and gesture recognition. The frontend has been optimized by moving away from HTML5 and improving backend communication. Upcoming plans in the next two weeks include coding one-sided operations like variable recognition, distribution, and simplification, as well as implementing touch gestures. Within one month, the goal is to add multitouch gestures, desktop equivalents, and features like undo and printing steps.

1. TOUCH OF MATH
Zach Clapper
Joe LaBarbera

2. WHAT WE HAVE BEEN DOING
 Completely rewritten backend
 Data Structures
 XML
 Improved recognition of intended gestures
 Frontend
 Moved away from HTML5
 Optimize communication with backend
 User-friendly

4. SOME TRICKY CASES:
 a-b-c = d -> a = d+b+c, not a = d + (b-c)
a-b+c = d -> a = d+b-c, not a = d + (b+c)
 a*b/c = a*(b/c), a/b*c != a/(b*c)
 a ^ b ^ c = d -> a = b^c√d, not a^b = c√d
 cos(x) = y -> x = cos-1y, not 0 = y – cos(x)

5. WHAT WE PLAN TO DO
 Two weeks:  One month:
 Begin coding one-sided  Implement multitouch
operations gestures, desktop
 Variable recognition equivalent
 Distribution  Add features
 Simplification  Undo
 Find a method of  Print steps
evaluation  etc.
 Implement touch
gestures
 Make better use of
github

6. THANK
YOU!