Unit+4

=__**Operations: Multiplication of 1 and 2-Digit Numbers**__=
 * ==Extended Facts [|video]==
 * ==Using Mental Math to Multiply [|breaking apart]==
 * ==Using Rounding to Estimate [|examples]==
 * ==Expanded Algorithm (2-digit by 1-digit) [|partial products algorithm] [|area model explanation]==
 * ==Promise Problem==
 * ==Arrays (2-digit by 2-digit) [|area method video]==
 * ==Connecting Arrays and Expanded Algorithm (Area Method and Partial Products compared)[|area model video] [|area method video] [|area method video]==
 * ==Multiplication Wrestling==
 * ==Partial Product Multiplication, Part 2 (Estimate/practice solving)==
 * ==Many Names for Numbers==
 * ==2-Digit by 2-Digit Multiplication [|traditional algorithm] [|partial products video] [|lattice video] [|lattice video]==
 * ==Problem-Solving: Picnic==