Beginning Arithmetic Speed Drills grade 1 Author:Rod and Staff Speed drills for Beginning Arithmetic 3rd Edition (current). This current 3rd edition is not compatible with the 2nd Edition (1991). This small tablet of 72 speed drills provides timed practice of addition and subtractions facts. These drills begin at lesson 28 and continue through lesson 170. Speed drills are to be given every other day. Direct... more »ions for using this tablet are in the teacher's manual.« less