Teachers are using technological innovations--including interactive whiteboards--in pre-K-grade 3 classrooms across the country. An IWB is a wall-mounted, touch-sensitive flat screen. When connected to a computer (or another electronic device) and a projector, it displays enlarged instructional content (such as a math word problem, pictures or graphics, or an excerpt from a story). Teachers and children can manipulate this content. Many early childhood teachers are incorporating this technology in their mathematics instruction. This article will help educators use IWBs and other technologies in ways that coincide with best practices in early childhood math instruction. It also shares examples of how to integrate other digital tools into mathematics instruction. (Contains 7 online resources.)