I use them for bridge building in a 5th grade class I tutor. I've bought several versions off Amazon and honestly can't tell the heavy weight from any other weight. So maybe they are all high density and just not mentioned in the description. Will buy again for my class next year.
Merka Educational Wall Posters β Set Of 8 Large Posters: USA Map, World Map, Human Body, Solar System, Periodic Table Of Elements, And More β Great For Classroom Use, Home Learning Or Student Room Decor
47 Review
Daily Schedule Pocket ChartοΌ Class Schedule With 26 Cards, 13+1 Pockets. 13 Colored + 13 Blank Double-Sided Reusable Cards, Easy Over-Door Mountings Included. (13β X 36β)
38 Review
16Pc Educational Classroom Posters Kit For Elementary, Preschool & Homeschool - Periodic Table, World Map, Solar System, Body Chart, Time, Money Math And More!
24 Review
Start Whittling Today With Kingcraft'S 12 Pack Of Soft Solid Baswood Carving Blocks - Perfect For Beginners And Kids!
24 Review
Tebik Gel Highlighter, 10 Colors Bible Safe Highlighter Study Kit, Highlighters Assorted Colors, Twistable Design, No Bleeding Great For Journaling, Highlighting And Study
36 Review
Nokian Tires Nordman 7 205/55 R16 94T winter
184 Review
3Mm X 220Yd Macrame Cord - 100% Natural Cotton Rope For Handmade Plant Hanger Crafts
32 Review
Mosaiz 18-Color Face And Body Paint Kit With Metallics, 3 Brushes, And 30 Stencils For Kids Party, Purim Costumes, And Professional Makeup.
36 Review