  In this work we present a simple way to get Macro photography (enlarged
photographs) using a tablet or phone. We initially discuss the technique, which
is essentially the accommodation of a drop of water on the camera lens. Next,
we explore some applications to science teaching in primary and secondary
levels. As discussed in the text, the simplicity and power of the technique may
make it a good teaching tool for use in various disciplines such as Science,
Biology and Physics.
