I made these worksheets as a more hands-on visual way of finding the surface area of triangular prisms.
The first worksheet (01) would be best printed on card. Students to cut out the nets, determine the surface area by counting squares and then form the solid.
The second worksheet (02) asks students to determine the surface area by counting squares on a net, then they match (using colour) the faces of the net with the faces of an isometric solid.
The third worksheet (03) has a variety of nets from which students can determine, by counting squares, the surface area.
The fourth worksheet (04) has four solids with dimensions for calculating surface area.
I now realise there should be a worksheet after 03 of nets without a grid.
22 October 2014 Edit: 6 December 2017
Shared by Simon Job Sydney, Australia