RT Journal Article SR Electronic A1 PAVLAS, Jiří T1 METHODICAL LETTER LIKE DIDACTIC INSTRUMENT JF Trends in education YR 2008 VO 1 IS 1 SP 205 OP 208 UL https://tvv-journal.upol.cz/en/artkey/tvv-200801-0049.php AB In the paper define the concept didactic instrument, division didactic instruments in compliance with different autors. Undermentioned possibilities development methodical letter like the didactic instrument and features design methodical letter.