Learning Clips is a growing bank of resources for teaching Primary (Elementary) math. Some resources are free
Free Learning Clips can be accessed here. You will need to register, but it’s free. Additional resources are available by subscription. The resources are ideal for KS1 and KS2 for use with Interactive Whiteboards and include video, interactive activities and some worksheets. If you just want to take a look, you can access resources on a time-limited basis.
Many activities come with a flash video alongside which sets the scene, and a further video provides a plenary. The main interactive activity can be made full-screen. You can search for resources by Year and Unit, or via Topic list. More free examples can be found here.
Great resources for Interactive White Boards. Make sure to check out the Free Learning clips from the Whiteboard Blog.