Primary Resources
Grid Multiplication
Ever have a completely confused fourth grader ask about multiplying a 3-digit by a 2-digit number? This slide show could really help clear things up. The grid or box method is fully demonstrated and explained in this straight forward...
Curated OER
Grid: Multiplication and Tally Marks
I wouldn't say that making and counting tally marks is the best way to solve a multiplication problems, but this PowerPoint may prove me wrong. Kids solve double-digit multiplication problems using a simplistic grid and tally marks. They...
Curated OER
Multiplication Grids Starter
How does grid or box multiplication work? Kids create a grid on their white boards then copy down the example problem in order to learn a new way to solve triple-digit multiplication. There are 5 practice problems with answers included.