When you want to give your gr. 6 students a challenge that asks them to think outside the box, the Evan-Moor STEM Lessons and Challenges, Grade 6 Teacher Edition is the perfect choice. This teacher's resource workbook has all of the explanations, tips and ideas you need to help sixth-graders solve real-world-type problems. We did not include an answer key in our workbook, as multiple methods will work to solve each STEM problem. This allows grade six kids to be extremely creative, as they collaborate with their classmates to find multiple solutions.