C-Line Products Two-Pocket Heavyweight Poly Portfolio Folder, 25 Count Blue options-1131-2 This boxed set includes 30

This boxed set includes 30 challenge cards—10 each for the three categories of physical science

Plastic frame is ribbed for easy grasping and has rounded corners for safety

promoting language and discussion

Permastone

C-Line Products Two-Pocket Heavyweight Poly Portfolio Folder, 25 Count Blue options-1131-2 This boxed set includes 30Need some help keeping your three ring binder in order? With the help of these unique two pocket folders, letter size papers can stay organized, while still remaining accessible in your three ring binder. Two pocket heavyweight polypropylene folders with three hole punch hold papers and resist tearing. Features three hole punching for secure storage in standard 3 ring binders. Cut outs at the top and bottom keep portfolio from being caught in binder