Unit lengths of plastic pipe are slid over joiners. Used in the teaching of decimals as the relative sizes of the pipes reinforce the concept of there being a factor of 10 between adjoining columns. Can also be used to model addition of decimals. Please note, this product has been designed for teaching decimals and proportional thinking. It is not a measurement tool and slight variations in the size of the units may be expected. Made of red and blue plastic pipes. Kit contains: - 6 x Red Joiners - 6 x Blue One Units - 90 x Blue Tenth Units - 2 x Red Half Joiners - 90 x Blue Hundredth Units - 1x Storage Wallet 9yrs+. See www.nzmaths.co.nz for activities and equipment animations using Decipipes.