Today's objective for my before school tutoring was using place value to strengthen number sense. It's usually our first topic of the year in math, so it was a great place to start.
A great website to use for place-value is the University of Utah's National Library of Virtual Manipulatives. It has the following place value blocks interactives:
With the simple base blocks, you can model a number:
With base-blocks addition, you can add numbers up to 4 digits and show regrouping if necessary:
With base-blocks subtraction, you can subtract numbers up to 4 digits and show regrouping:
To compare numbers, check out my post on balance scale equalities and inequalities!
Check out my other math posts here.