RT Journal Article SR Electronic A1 Vránová, Olga T1 Tasks in natural science textbooks JF e-Pedagogium YR 2009 VO 9 IS 1 SP 91 OP 96 UL https://e-pedagogium.upol.cz/en/artkey/epd-200901-0010.php AB This article contains results of the task evaluation in natural science textbooks. There were analysed ten textbooks of the Alter, Fortuna, Nová škola, Prodos and SPN publishing companies. The attention was paid to number, difficulty and diversity of tasks in each textbook. The difficulty of tasks was classificated according to Tollingerová. The results showed - the difficulty of tasks were similar in all evaluated textbooks. The most frequent were tasks of simple cognitive level. Differences were obtained in number and diversity of tasks.