Science Adventures: Nature Activities for Young Children

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For example, when pilot testing a classroom observation tool, the team of observers will need repeated practice in observing the same situation so that all obstacles to inter-rater agreement are addressed (e.g., by further clarification of coding categories). A parallel flow diffusion battery for determining the mass distribution of an aerosol has a plurality of diffusion cells mounted in parallel to an aerosol stream, each diffusion cell including a stack of mesh wire screens of different density.

Pages: 272

Publisher: Gryphon House (May 1, 2008)

ISBN: 0876590156

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