: Identifying points, rays, and perpendicular/parallel lines.
: Fluently adding and subtracting using standard algorithms. MTH.4.mp4
: Multiplying a four-digit number by a one-digit number, and two-digit by two-digit multiplication. Fractions and Decimals : : Identifying points, rays, and perpendicular/parallel lines
: Understanding the relationship between decimals and fractions (e.g., Algebraic Thinking : : Identifying points