The priorities of giving donation

I wonder what is the best manner to donate money, especially in these holy days, should donations be given as important amount, or it could be divided to reach the maximum of persons, as a result the persons would receive little amounts of money. Also i would like to know which donation is better : * giving donation to help others buy sheep for Eid el Adha. * giving donation to families who do need more basic needs, like scholar needs ... * giving donation to build a mosque.