Students get an instant, visual grasp of beginning measurement concepts—as they conduct simple investigations with our hands-on centers! Each center includes 24 activity cards with illustrated instructions that are just right for beginners…plus all the tools children need to complete each activity—from comparing weights to measuring pencils, tables & more! Plus, as students complete each engaging activity, they explore concepts like heavy & light, more & less, length & width, and much more. All 3 centers, each with a 9" wooden card stand.