The math to determine how many cubic yards of crushed stone you will need for a given number of tons follows: 1  Number of tons you need X 2000 pounds per ton = Number of pounds. 2  Number of pounds / pounds per cubic yard of material = Number of cubic yards needed.
Roll back curriculum constraints and give teachers the freedom to make professional judgements. The role of the teacher in an Australian classroom is changing, and not in a good way.
The idea of a dominant tongue-rolling gene was actually debunked long ago, but many schools still use it as a classic example, says John McDonald, an evolutionary biologist at the University of Delaware who is on a quest to dispel this myth, according to PBS Newshour.