Student text approved for use in Ontario schools, Oct. 27, 2009, science and technology, grade 4, supporting the curriculum guideline: The Ontario curriculum, grades 1-8: science and technology, 2007.
Trillium List 2009.
Teacher's guide, Focus on sustainability book, fact sheets, and DVD are all c2009.
DVD also has title: Focus on sustainability.
Fact sheets have general title: Tell me more.
Content Note
[v.1].Habitats and communities - [v.2].Light and sound energy - [v.3].Pulleys and gears - [v.4].Rocks, minerals, and erosion.