\input zb-basic \input zb-matheduc \iteman{ZMATH 2015f.00355} \itemau{Podojstr\v{s}ek, Nata\v{s}a} \itemti{Mathematical activity in the elective subject mathematical workshop. (Matemati\v{c}ni aktivnosti pri izbirnem predmetu matemati\v{c}na delavnica.)} \itemso{Mat. \v{S}oli 20, No. 3-4, 39-45 (2014).} \itemab Summary: Featured are two mathematical activities that can be performed in the elective subject Mathematical workshop. They belong in the field of combinatorics. Indicated are possibilities of extending the activities and examples of implementation for which the teacher can decide according to the age and ability of children in the group in which the activities are carried out. The activities can be introduced as early as the fifth grade, but they are the most suitable for seventh- and eighth-graders. Both activities enable experiential learning, develop divergent thinking, enable the use of the strategies of trial and error and problem solving, and encourage children to collect and organize data, leading them to an inductive conclusion. \itemrv{~} \itemab Summary: Predstavljeni sta dve matemati\v{c}ni aktivnosti, ki jih lahko izvedemo pri izbirnem predmetu Matemati\v{c}na delavnica. Spadata v podro\v{c}je kombinatorike. Nakazane so mo\v{z}nosti raz\v{s}iritve aktivnosti in primeri izvedbe, za katere se lahko u\v{c}itelj odlo\v{c}i glede na starost in sposobnost otrok v skupini, v kateri se aktivnosti izvajata. Tako ju lahko igrajo \v{z}e v petem razredu, \v{s}e najbolj pa je primerna za sedmo\v{s}olce in osmo\v{s}olce. Obe aktivnosti omogo\c{c}ata izkustveno u\v{c}enje in razvijata divergentno razmi\v{s}ljanje, strategijo poskus-napaka, strategijo re\v{s}evanja problemov, sposobnost zbiranja in urejanja podatkov, ki peljejo do induktivnega sklepa. \itemrv{~} \itemcc{D33 D53 K23 A23} \itemut{mathematical workshop; Hanoi towers; changing the circles} \itemli{} \end