Math is fun? -- Fat triangles & flattened bagels -- Cool curves -- A roomful of right triangles -- Math in music -- Pachinko math -- GCF-LCM machine -- Baumkuchen, spaghetti & watermelon -- Automat(h) -- A slice of a cone -- Paper twists -- Fold and cut -- Jigsaws from tetrahedrons -- Single & double duty solids -- Reversible solids --All the way home.