Susan Hobart asked this week’s “question-of-the-week": What strategies help math facts stick besides the old “drill the skill” and, if someone is not proficient at addition facts, can learning ...

Multiplication is calculating the sum of groups of the same size. There are lots of ways to build and describe multiplication problems. Using repeated addition, you can add equal groups together, one ...

Concept, notation, order, equality, types of matrices, zero and identity matrix, transpose of a matrix, symmetric and skew symmetric matrices. Operation on matrices: Addition and multiplication and ...