My son has triangle fractions problems with shaded, striped and spotted triangles in a large triangle diagram: nine llittle triangles are shaded, 3 medium size striped triangles made up of 4 little triangles each and one large spotted triangles made up of 16 little triangles, and the rest are 27 little white triangles. the other questions are what fraction of the spotted triangle is a shaded triangle?, what fraction of the spotted triangle is a white triangle? There are others but is we can understand the first few sentences I think we'll be able to get the others.