Okay kiddo, so a unicursal hexagram is a fancy symbol that can be drawn without lifting your pencil from the paper or retracing any lines. It looks like a six-pointed star made up of one continuous line.
Imagine drawing a circle on a piece of paper. Now, draw a line from the top of the circle to the bottom, and another line from the left side of the circle to the right. You should have made a cross inside your circle.
Now, starting where the two lines meet in the center of the circle, draw a line diagonally up to the top right of the circle. Without lifting your pencil, continue the line down to bottom left of the circle.
Next, draw a line diagonally up to the top left corner of the circle, and continue the line down to the bottom right of the circle. You should now have a six-pointed star that looks like it's made up of one continuous line.
Some people believe that the unicursal hexagram has magical properties and can be used for things like protection or invoking certain energies. But no matter what you believe, it's a pretty cool looking symbol!