All  Calculus In Motion  and  Algebra In Motion  files continue to run on BOTH Sketchpad v4 AND v5 (both Windows AND Macintosh).

HOW TO GET UPDATES:  The June 2025 Calculus In Motion expansion is free to those who purchased Calculus In Motion (or had it updated) since June 2015.  The June 2016 Algebra In Motion expansion is free to those who purchased Algebra In Motion (or had it updated) since April 2010.  To request your free update, send an email with your collection’s 5-digit serial number along with your name and school to amweeks@aol.com and they will be attached back to you.  Because you will be sent the ENTIRE revised collection in a compressed folder, a nonschool email address is best (some school servers will block this transmission).  If you have any questions, email them to amweeks@aol.com.

CALCULUS IN MOTION UPDATES were released June 2025, June 2024, June 2023, June 2022, June 2021, June 2019, June 2018, etc – every June since 2000.
The latest expansion, June 2025, included animations to the 2025 AP Calculus AB & BC exam FRs (see videos of some of the past FR animations on videos page); additional cross-referencing; and the revised Instruction Manual (PDF) expanded to include these additions along with its FR cross-reference chart revised as well.

ALGEBRA IN MOTION UPDATES were released June 2016 (Geometry added), Nov 2012, Apr 2010, Feb+Mar 2008, Mar 2007, Mar 2005, Mar 2004.
The latest expansion, June 2016, added 45 new animations, most of which cover Geometry – all types of angles, transversals, triangles (all types, centers, proofs), circles (angles, arcs, chords), quadrilaterals, polygons, solids, areas, surface areas, volumes, lots of theorems, and more!  (see videos on videos page)  PLUS, for algebra, new animations address piecewise-defined functions with pre-set examples as well as a fully customizable page.