If you’ve homeschooled for any length of time, you know the panic that hits when you realize your child forgot how to multiply fractions—or worse, that you can’t quite remember how to explain it ...

Place value describes the position of a digit in a number. It also gives the value of each digit in a number. Hundred squares, number lines, bundles of straws and tens and ones blocks can be really ...

When you do not need to speak or write about exact quantities or measures, learning to round numbers to 10, 100 or 1,000 can be useful. It can make calculations easier and it also helps when you are ...