Atractor has at your disposal a large variety of resources that you can use related to the dissemination of Mathematics.

Some Atractor resources (for now, only in Portuguese)

Conditions regarding the use of Atractor resources

The CDFs made available on this site are distributed under the Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA) license, which implies that CDFs may be used and distributed with changes, whether by remixing, tweaking or expanding as long as the new creations are licensed under the same terms.

All other resources made available on this site, including software, are distributed under the terms of a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, and may be freely used provided that: 1) the use is for non-profit, (2) their origin is explicitly mentioned; and (3) they are used and distributed without alteration, so that material resulting from remixing, tweaking, or expanding cannot be distributed. We hope you find them interesting and useful.

If you wish to support Atractor's activities you can do so through a donation.
Your donation must be made by bank transfer to the account:

IBAN: PT50003505780002321213096

BIC SWIFT CGDIPTPL

Conditions on the commercial use of materials

The use for commercial purposes, not allowed by the above conditions, requires permission by Atractor which can be requested through the contact: atractor AT atractor PONTO pt. The situation will be analyzed on a case-by-case basis by the Board.