Make your Dewey Decimal Library Lesson more authentic & relevant by inviting 7g Math classes to review adding & subtracting decimal numbers! Students & teachers love this Library Lesson that activates prior knowledge at the beginning of their 7g Math decimal unit. Do this lesson, and your math teachers will come to you every year asking when you'll schedule their visit!7th grade students love working with peers & moving around, so this Interactive Dewey Decimal Hunt has them find