2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/738K and M giants show variability on timescales from years down to days and possibly even hours. I discuss the contribution that can be made with high-precision photometry that will be obtained by the MONS Star Trackers. These include observations of flare-like events on Mira variables, and oscillation spectra for K giants and short-period M giants.5 pages, LaTeX, 2 Postscript figures. To appear in Proceedings of the Third MONS Workshop: Science Preparation and Target Selection, edited by T.C.V.S. Teixeira and T.R. Bedding (Aarhus: Aarhus Universitet)Astrophysicstext