This file is a poster sized to 24x36 inches. This pdf file can be sent to a printing company and laminated for a great addition to your science classroom. I have found that local companies that print blueprints offer excellent prices to print posters of this size. It is important that students are able to connect daily instruction to the Cross-Cutting Concepts. I add magnets under the poster on each line and also on the back of a black arrow. This allows for attention to be brought to the particular Cross-Cutting Concept we are currently addressing in instruction.