Each week of problems for first grade centers on a different animal. Accurate facts about the animal are presented to make the problems more realistic. Mathematics skills practiced include: addition and subtraction facts, column addition, 2- and 3-digit addition and subtraction, counting by 2s, 5s, 10s, reading and interpreting graphs and charts, reading and writing numbers and number words, fractions, time, money, measurement. 112 pages.