Year 7 were set a "Matrix homework": a choice from 8 challenges to investigate volcanoes.  They could chose one project including building a model, investigating a country that had volcanic eruptions, makig a movie or flip book, compiling a scrap book page etc.  The response has been phenomenal.  We have had 3D printed models, erupting volcanoes, cross- sectional models, even cakes baked to look like volcanoes!