Transition metals High School Chemistry tarsia - use as lesson starter, plenary or revision

This is a fun High School Chemistry tarsia for revision of transition metals and is suitable for more able students. There are 16 triangles with 18 pairs of questions and answers that make a parallelogram. I suggest that the A4 tarsia is printed on card and then the outline is cut out. Students can then quickly cut out the individual triangles. Included are the following topics: transition metal uses, transition metal properties, magnetic metals, catalysts, aqueous copper ion colour, pH of iron hydroxide vs iron nitrate. The tarsia software is free to download but there is not currently a version for Mac computers.