The international interlaboratory comparison (ILC) outlined improvements that reduce measurement uncertainty, in some cases by a factor of 15, and which will be the basis for a new international ...

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Give children plenty of opportunities to measure and compare quantities, and develop the vocabulary to describe what they are doing, with more activity ideas in our series by Sheila Ebbutt and Carole ...

When constructing a survey we face many choices: which questions to ask or tasks to present, how to present them, what responses, if any, to provide, and what contextual information to provide. In ...