SCOOTPAD: $600K to Mountain View, CA-based ScootPad in seed round led by Silicon Valley angels Brad Buss, Michael Tate, and John Keller. The startup offers an online platform for Common Core-aligned math and reading exercises for grades K-5, and boasts over a million users. First order of business with the new cash in hand: hiring for lead roles for curriculum/content and support/community. More info on the company's blog.