Students should engage in systematic observation, making accurate measurements, and identifying and controlling variables.
Science as Inquiry
Plan and conduct scientific investigations.
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Students use tools such as rulers, thermometers, watches, balances, spring scales, magnifiers and microscopes to extend their senses and their abilities to gather data.
Objects have many observable properties including size, weight, shape, color, temperature and the ability to react with other substances. Those properties can be measured using tools such as rulers, balances and thermometers.
In earliest years, investigations are largely based on direct observations. As students develop, they design and conduct simple investigations to answer questions.