From a waxing or waning crescent to first or third quarter, all the phases of the moon can be taught using this crafty find. A great addition to hands-on activities for science curriculum and formative assessment tools, this scratch ’n reveal must-have challenges students to etch away at black surfaces to show different phases of the moon. Moreover, this acts as a handy reference for key terms, defining four phases on the back! Includes 12 scratching tools. Paper. (1 dozen per unit) 21.6cm