Moon Phase Flash Cards

The trouble with having your students make flash cards to learn moon phases is that when they cut them out, unless they are very careful, they will mix them all up and then end up with the wrong moon with the wrong phase.  I finally developed some moon phase flash cards that cannot be mixed up.  Students have a description of the phase on one side and a picture of the phase on the other.  Both the phase description and the picture have a shape in the corner that matches.  Students can cut all of them out at once and then match the shapes and make their flashcards.  Problem solved!  The moon pictures for these flash cards were taken with my 4.5 inch Dobsonian telescope.  Here is an example of the pictures:

Nice huh? The link to my flash cards can be found here:
http://www.teacherspayteachers.com/Product/Moon-Phase-Flash-Cards