180 Days of Number Talks for Second Grade! Build second-grade mental math strategies in just 5 minutes a day with these read-to-use Number Talk Slides. This resource includes 180 sets of Number Talks, and is perfect for introducing and building critical mental math strategies in second grade. Available in ⭐️ Google Slides and PDF⭐️ versions, this powerful math routine is now as simple as download and display. They’re perfect for substitute days, too! ***PLEASE SEE PREVIEW FILE FOR EXAMPLES***