[Free Registration/Login may be required to access all resource tools.] This learning module features four videos and a set of practice questionsin which students use addition and subtraction to solve problems with more than two values...

First graders learn the basics of 1.OA.1 by mixing addition and subtraction word problems from day 1. The focus question is: Put together or take away?

Use this Web site to practice finding equivalent fractions using a matching game format. CCSS.Math.Content.3.NF.A.3.a Understand two fractions as equivalent (equal) if they are the same size, or the same point on a number line.