This is pdf sized for a 24x36 inch poster. Send this file to your local print company and laminate for a great visual in your science classroom. Search out local blueprint companies. My experience has been that they are able to print these large posters very cheap. Students should be able to connect their learning to these practices. Arrows with adhesive or magnets can be added next to the numbers/practices to draw student attention to what practice is being developed each day. Various sized arrows can be found in my store for free.