ISBN: 9787806640708 - i count relaxed and happy quick calculation every day to practice mental arithmetic thin: 6 year (vol.2) (who teach standard version)(chinese edition) (1 Ergebnisse)

paperback. Zustand: New. Paperback. Pub Date :2009-02-01 Pages: 90 Language: Chinese Publisher: Changchun Publishing House. relaxed and happy I count quick calculation every day to practice mental arithmetic thin: Grade 6 (Vol.2) (who teach standard version) will textbook knowledge conduct a comprehensive. systematic optimization of the design and layout combinations. and keeping up with the progress of teaching. can rapidly improve pupils port operator. mental arithmetic. skills. techniques and basic computing powe.…