Warm-Up Balls
Grading may have gone hi-tech these days—more mouse, less writing—but teachers hands still get tired from too much typing. Black Diamond Warm-Up Balls may be the key to their heart, er…hands. These rolling balls are used to increase circulation and exercise tired, stiff fingers and palms. Originally developed for climbers, they are just as appropriate for adventurous educators. Made of hollow steel.
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