It would appear that the only true homogeneous classroom is one occupied by one teacher and guiding one child.'' A teacher can, however, modify instruction to provide for individual differences. (Author/RH)

A simulation exercise involving being transported to another planet forces students to use different instruments, devices, and units for measuring. (CP)

Applications of wheels are shown to be an invaluable tool in teaching the processes and technology of science. (DF)

The function of filters in various situations is discovered through activities with common objects, machines, and organisms. (DF)

Twelve science activities involving the common paper food bag and the small plastic food bag are described. (DT)

Describes eighteen ways in which balloons may be used as a teaching tool in demonstrations and discovery exercises in science. (JR)

Instructional uses of paper are described. Some of these include tensile strength, water absorbtion, fish study, functioning of eye lenses, and flotation. (PS)