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Note: We have chosen inexpensive materials. As they might be fragile, we suggest keeping them in your classroom and only taking them outside each time you want to take a measurement. Of course, if you wish, you can also use other materials, but please respect the dimensions written in the guide in order to be able to compare your data with the ones from the other schools.
2) Data recording (if possible once a day, preferably the same time each day). Download your logbook to record your measures.