The set stays together with a rivet at the top.
A single string, already attached, makes them easy to use and organize.
Students wrap the string from the problem on the left to the answer on the right, and then turn the Wrap-us over to see if they got it right.
Use a stopwatch to measure improvement and to see how fast they can really go.
Keys: 10, riveted together
Drill Problems: 120
Manufacturer: Learning Wrap-Ups
Made In: China