Basic Skills and Technology- not a Contradiction, but a Completion

Are certain basic- manipulating and other- skills still necessary in math teaching? If so, then we should talk about which ones and in which amount. Some examples shall de-monstrate that we can use modern computer and hand held technologies to encourage pupils and students of all levels to practise those skills which might be neglected in many cases using technology in math education. The examples presented have proved to be successful in classes but certainly there are many possibilities to improve the basic ideas in many ways using the features of all resources available at the moment. At almost all discussions on the use of CAS in teaching mathematics the question appears mathema-tical basic (manipulating) skills are lost by using computers or not. At the same occasions it is empha-sized by the members of the discussion that there is a need in investigating which basic skills are still necessary and in which amount. I start from my point of view that- at this moment- we cannot and should not do without certain basic skills in mathematics. I feel unable to give any forecast for the future. I am sure that we could signifi-cantly rise the acceptance of technology in teaching mathematics by sceptic and critical teachers o