Homogeneous grouping is the placement of students of similar abilities into one classroom. Although there may be a range of abilities in one classroom, it is more limited than the range found in the heterogeneous classroom. All gifted children within the same grade level will be in the same classroom, for instance.
Liberty Bell Facts. The original Liberty Bell was cast in 1752, in London, England. It was hung in the Pennsylvania State House, in Philadelphia, Pennsylvania, United States, which was later renamed Independence Hall. It cracked the first time it was rung and was then recast by local artisans, twice for the same reason.
Air-Powered Train Whistle Made From PVC AG WORLD 28-4-22 It looks and sounds like an old steam locomotive train whistle, says Dewey Wright, Charlotte, N.C., about the three-chime, air-powered whistle he made entirely from PVC pipe. The whistle measures 15 in. tall and 3 1/4 in. in diameter. It's designed to be powered by a low volume compressor at about 15 psi.