Drawing techniques

My grade 7 art class are learning drawing techniques, such as cross hatching and stippling.

After practicing the techniques they were required to magnify (through gridding) and copy an image....

 Grade 7 pencil drawing

 Grade 7 pencil drawing

 Grade 7 pencil drawing

I am really happy with the results however....next time I am going to do the unit differently. This took a long time and students were frustrated with the detail required. A less complicated image may serve the students just as well and teaching from established artists and student creativity (rather than purely technique base) is always my preference.