  Goldstone Apple Valley Radio Telescope (GAVRT) is a science education
partnership among NASA, the Jet Propulsion Laboratory (JPL), and the Lewis
Center for Educational Research (LCER), offering unique opportunities for K -12
students and their teachers. The GAVRT program operates a 34-m radio telescope
with a wide-band, low noise receiver, which is tunable in four independent
dual-polarization bands from 3 to 14 GHz. The annular eclipse of the Sun on
2012 May 20 was observed by GAVRT as part of education outreach. In this paper
we present the results of this eclipse data and discuss the multi-wavelength
strip scan brightness distribution across three active regions. We derive the
source brightness temperatures and angular sizes as a function of frequency and
interpret the results in terms of the gyroresonance mechanism. We show examples
of the increasing brightness and widening of source size (isogauss surface)
with wavelength as evidence for gyroresonance emission layers of broader
(diverging ) isogauss surfaces of the magnetic field geometry in the corona
above solar surface. We present an example how the derived frequency -
brightness temperature relationship is translated to a magnetic field -
brightness temperature relationship under the frame-work of gyroresonance
emission. Our results demonstrate the usefulness of GAVRT bands as excellent
probes to study the layers of the corona above the active regions (sun spots),
in particular the prevalence of the gyroresonance mechanism. Our results
provide a frame-work for multiwavelength cm-wavelength eclipse observations and
illustrate how the GAVRT program and K- 12 student/teacher participation can
produce science data useful to the scientific community and science missions.
