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Measures 280 x 330mm, Recipe for lava included Easy clean Teacher's guide 2 part cross section description within model, There's nothing like an erupting volcano to get children fired up about science! One half of the detailed cross-section shows the inside, the other is labelled for assessing knowledge. Includes easy-to-make lava recipe and 330mm clear plastic tray and removable tube for quick clean up. Teacher's Guide included.