====== Math tidbits ======

===== multiplication =====

  * [[imprecise_precision|imprecise precision]]: using grids for polygons
  * [[https://jimmorey.com/js/Multiply.html| a multiplication facts app]] It has two modes: speed and endure. Speed sees how many correct answers can be done in a fixed time. Endure continues indefinitely until a certain percentage of the most recent questions are answered correctly. 
  
===== TileDrive =====

   * 7o<4<7>4<74<7>4<7>4<74<7>4<7>4<74<7>4<7>4<74<7
   * 7o>46,,7>46,,746,,7>46,,7>46,,746,,
   * 5p3l<3<5>p3l{5pi3oli<3<5p>3li<3<5p3l<3<5p3l<3<5p>3l<3<5p}<3<5p3<l3<5p3l<3<5p>3l<3<5p3l<35p<3l3{<r5pi3oli<3<5p>3li<3<5p3l<3{5p<<335<3<5<3ltl35p<<335<335<335<<335<3<5<335<<335<335}<5p3l<3<5p>3l<3<5p}5p<<3l35p<3l35p<3l35p<<3l35p<3l3

==== fails ====

   * 5p3l<3<5>p3l{5p3ol<3<5p>3l{5p3l<3<5p>3l{5p3l<3<5p>3l<3<5p3l<3<5p3<l3<5p>3l<3<5p}<3<5p3l<3<5p3l<3<5p>3l<3<5p}<3<5p3<l3<5p3l<3<5p>3l<3<5p}<3<5p3l<3<5p3l<3<5p>3l<3<5p3l<3<
   * 5p<4,5>3,5<4,5>3,5<3,5>4,5<3,5>4,5<3,5>3,