Math Activities by the Standard:
http://www.ixl.com/standards/common-core/math/grade-3
Mathematical Practice Posters:
End Of Grade Practice Tests
Math Practice test
http://dpi.state.nc.us/docs/accountability/testing/releasedforms/g3mathpp.pdf
Reading Practice Test
http://dpi.state.nc.us/docs/accountability/testing/releasedforms/g3elapp.pdf