Ustvarjalci projekta E-um smo pripravili spletni portal s preko 1100 interaktivnimi gradivi iz osnovnošolske in gimnazijske matematike, ki je po 20-mesečni aktivnosti sedaj na voljo uporabnikom. Glavni namen prispevka je komentirati odzive uporabnikov in strokovne javnosti na objavljena gradiva in jih soočiti z začetnimi konceptualnimi izhodišči projekta ter iz njih izpeljati nekatere smernice za nadaljnje izboljšave portala. Posebej opozarjamo na eno od izhodišč, ki se nanaša na skrb za poglobljeno predstavljanje snovi. Ker se matematično izobraževanje pri nas vse bolj zožuje le na pripravo na pisne preizkuse znanja, menimo, da bi prav nekatera naša gradiva lahko odigrala pomembno vlogo v promociji ideje, da je matematika mnogo več kot le reševanje rutinskih nalog.E-um portal was designed to become a widely used primary and secondary school e-learning aid for mathematics. Now, after about 20 months ofE-um activities the portal with over 1100 e-learning units is freely accessible. In this paper we comment on feedbacks of users and professionals. Considering these opinions, we revise our conceptual origins and draw some plans for further improvements. One of our main principles in preparation of e-learning units was emphasizing understanding. In their feedbacks users hardly notice that e-learning units provide and stimulate deeper understanding. We assume, this is the consequence of general set of educational values, which emphasize and focus primarily on test productivity, white diminishing the value of understanding. Therefore, we plan to use E-um learning materials also as a promotion of learning focused on understanding