Corrugated cardboard has two main components: the linerboard and the medium. Both are made of a special kind of heavy paper. Linerboard is the flat facing that adheres to the medium. The medium is the wavy fluted paper in between the liners. Single Wall is manufactured with the medium between two sheets of linerboard. Double Wall has three sheets of linerboard with two mediums in between.
A new Microsoft-commissioned survey shows European girls lose interest in STEM subjects around the age of 15. Microsoft admitted it doesn't have a comprehensive explanation for why 15-year-old girls lose interest in science and math.
Code.orgâs curriculum has been adopted by 20,000 teachers from kindergarten to 12th grade. But if coding is the new lingua franca, literacy rates for girls are dropping: Last year, girls made up 18.5 percent of A.P. computer science test-takers nationwide, a slight decrease from the year before. In three states, no girls took the test at all.