A lot of things have been done in Sweden to develop and improve teaching in natural science in school, for example courses for teachers and technology courses for girls. The last nine years money has been invested from the Swedish government in something called NOT (natural science and technology), to stimulate the interest of science and technology. This study is based on an inquiry among teachers in Karlstad spring 2002. The teachers all works with children in age 6-12 year. This scientific research will try to find out the teachers own opinions of their teaching in natural science. It will also examine if they think that there are differences between boys and girls knowledge and interest of natural science. At last it will try to answer if the teachers in Karlstad are implicated in different networks and development projects and if they are known with science webb-sights. The inquiry shows that there are needs of improving natural science education among the teachers. Time is a spare resource for the teachers and reduce their possibilities to develop their natural science knowledge. The most usual way of developing the own knowledge is to compare notes with colleagues. Most teachers want to teach pupils in smaller groups than they do today and they want to have a special classroom for their natural science. In that classroom they want the pupils to do laboratory work. The teachers miss laboratory material at their own schools. The teachers do not think that there are differences between the boys and girls knowledge of natural science, but there are some more teachers who thinks that boys are more interested of natural science than girls are. The teachers in Karlstad are not implicated in different networks and development projects and most of them do not know different webb-sights.