Test Tubes, Rack and More, Glass 1 Ply Corrugated and Dry Erase These easy-to-manipulate foam discs are

These easy-to-manipulate foam discs are color-coded according to place value allowing students to visually track what happens when regrouping numbers100 total discs 25 each thousand

Sold as a pack of 24 in assorted colors: Blue

includes two rubber bumpers for inelastic collisions

UPC: 727638173905

Includes 4 each of 6 designs: Star Student

Test Tubes, Rack and More, Glass 1 Ply Corrugated and Dry Erase These easy-to-manipulate foam discs areMPN: 006607 UPC: 713757867917 Get a jumpstart on your next science experiment with Test Tubes, Rack + More Glass Kit. A great basic kit, featuring some of the most common tools found in all labs. The glass test tubes are made from borosilicate glass tubing with uniform wall thickness for maximum heat transfer and chemical resistance. The 4 way test tube rack is sturdy and can be used for other size test tubes, even the large Safety Test Tubes or