We use Mr. Sketch markers at Fibo because the chisel-tip simulates the angle-tipped brushes we use, so the markers act as training wheels for painting.
With that said, we specifically recommend Mr. Sketch markers because they have chisel-tips which allow for both thin and thick lines, they make covering large areas fast and easy, and bonus, they smell really good!
Recommended for grades K-6.
The more colors the better!