Khan Academy
Khan Academy: Meaning of Multiplication
Practice representing multiplication as equal groups, repeated addition, or arrays. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. Video content is available for...
Khan Academy
Khan Academy: Math: 3rd Grade: Understand Multiplication Using Groups of Objects
Math practice exercise on using arrays and repeated addition to visualize multiplication.
Other
2nd Grade Worksheets: Common Core State Standard 2.oa.4
A collection of four activity sets that address the Common Core State Standard 2.OA.4.