In this poster we present preliminary results from integral field 3D spectroscopy of the two prototypical star-forming galaxies IZw18 and IIZw70. The observations were taken with the instruments INTEGRAL/WYFFOS at the WHT (ORM, La Palma, Spain) and PMAS at the 3.5m telescope of CAHA (Calar Alto, Almeria, Spain). The observations cover a spectral range from lambda 3600 to 6800 A , thus including from the [OII] lambda 3727 A up to the [SII] lambda 6717,31 A lines. These IFU data will allow the study of the ionized gas and the stellar clusters. Our main goal is the study of the chemical abundances with spatial resolution in order to relate them to the stellar population. Maps of relevant emission lines and continua of these galaxies, as well as their physical and chemical properties are presented.