Roman Brilej, Dezider Ivanec: ALFA Realna števila, Ataja 2008

Marija Vencelj: Matematika za triletne poklicne šole, 1. zvezek, DZS 2009

družinsko drevo (slika): http://www.everify.com/wp-content/uploads/2012/05/Family-Tree.jpg

družina (slika): http://ro.zrsss.si/borut/ang/ulist.html 

potenca (slika): http://www.nauk.si/materials/374/out/#state=7

računanje s potencami (animaciji): http://www.e-um.si/

žepno računalo (tipke , , , ): http://s4.bolha.si/0/image/124007/125288/Kalkulator-SHARP-EL-520-W-WH_5075adf4673db.jpg

žepno računalo (tipka ): http://www.germes-online.com/direct/dbimage/50252912/Electronic_Calculator.jpg

žepno računalo CASIO (slika): http://www.amazon.com/Casio-FX-300MS-229-Function-Scientific-Calculator/dp/B00004U12N%3FSubscriptionId%3DAKIAIVGYBGAEKG77A2YQ%26tag%3Dedealsbp-20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D165953%26creativeASIN%3DB00004U12N

potenca (znaki =, >, <) (slika): http://www2.arnes.si/~osljjk6/matematika/koreni_potence/koreni_potence.htm

rubikova kocka 2x2x2 (slika): http://www.google.si/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Pocket_cube_scrambled.jpg/200px-Pocket_cube_scrambled.jpg&imgrefurl=http://sl.wikipedia.org/wiki/%25C5%25BDepna_kocka&usg=__a_FIYX7PsO5VXfI2JBlFcKSL0eY=&h=200&w=200&sz=10&hl=sl&start=38&zoom=1&tbnid=ewXXDZo34SnWFM:&tbnh=104&tbnw=104&ei=7KqrUIHzKYresgbqt4CwBw&prev=/search%3Fq%3Dkocka%26start%3D20%26um%3D1%26hl%3Dsl%26sa%3DN%26tbm%3Disch&um=1&itbs=1