Dr. Powell shows how to teach the addition of two-digit addends to find a sum using the partial sums method. This video is part of the Project STAIR series.
Whole Number Computation
Subtraction with Partial Differences
Dr. Powell demonstrates how to teach subtraction using the partial differences method. This video is part of the Project STAIR series.
Subtraction with Adding Up
Dr. Powell demonstrates how to teach subtraction using the adding up method. This video is part of the Project STAIR series.
Multiplication with Area Model
Dr. Powell demonstrates how to teach multiplication using the area model. This video is part of the Project STAIR series.
Multiplication with Partial Products
Dr. Powell demonstrates how to teach multiplication using the partial products strategy.
Multiplication with Lattice Method
Dr. Powell demonstrates how to teach multiplication using the lattice method.
Division with Partial Quotients
Dr. Sarah Powell demonstrates how to teach division using the partial quotients strategy.
Division with Lattice Method
Dr. Powell demonstrates how to teach division using the lattice method.