Plastic 3-Minute Timers - 12/pkg. Office Supply>>Teacher Markers >>Overhead Markers and has a smooth surface

and has a smooth surface for working with pencils

Large 4" x 7/16" size is easier for smaller hands to hold

Easy to use for children of all ages

group projects

Plastic 3-Minute Timers - 12/pkg. Office Supply>>Teacher Markers >>Overhead Markers and has a smooth surfaceAssorted. Size: 3" Enough sand for 3 minutes. These colorful 3 minute timers are perfect for activities and tests in classroom or laboratories. These party supplies can also be used to time games. Each of these colorful plastic timers contain just enough matching sand to measure out three minutes. When the sand runs out, just turn the timer over and it begins again. 3".