This report provides the design specifications for a multi-functional teaching apparatus developed for alpha and beta spectroscopy. The apparatus utilizes a solid state detector and associated electronics. The possible experiments for which it can be used include conventional measurements to determine alpha and beta decay energies, half lives, characteristic energy loss of nuclear particles in matter, and limits on the neutrino mass set from endpoints in beta-decay spectra. In addition, the relativistic mass increase of beta particles is verified using a high-efficiency, axially symmetric permanent ring magnet beta spectrometer. The basic apparatus also can be adapted for experiments in Rutherford scattering and other nuclear physics measurements