Savannah is deep in the heart of division, fractions, and factoring in school. We have been reviewing the divisibility rules for numbers. (FYI: Divisibility rules are the little "helper rules" that are used to figure out easy ways to know if numbers can be divided by another number.) I found a great mathematics divisibility tool/sheet on a website. It has a list of all the diivisibility rules for the numbers up to 11. The site is here: Divisibility rule site.
I took the sites information and made a compilation of the rules on a pdf to print out for Savannah's use. It's a nice sheet to have around when you are looking to factor a number or when you are just trying to find a common denominator between 2 fractions. We taped the rules sheet right in front of her so that she always has it available.