Third graders expand on their knowledge of music theory with a practical edge. The C and G scales are introduced through story and image, which also begin to expose the children to whole and half steps and the concepts of tonality, and sharps and flats. At this point, students have graduated from the pentatonic reorder as they practice harmony and articulation on the diatonic recorder. New finger positions such as B flat and F sharp.are also introduced. Music classes often feature singing while tone and pitch exercises are often accompanied and embellised by a variety of wind and percussion instruments.