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In this activity, learners work in teams to study the observation skills essential to scientific research.

Using indirect methods, learners determine the shape and size of a piece of carpet hidden under a piece of plywood.

In this lesson, learners are challenged to discover the relationship among six numbers.

In this activity (page 26 of the PDF), learners make observations, formulate hypotheses and design a controlled experiment, based on the reaction of carbon dioxide with calcium hydroxide.