Scientists use the Metric System to measure. Measuring is marking or fixing in multiples of a specific unit. A tool is an object or device used to perform a task. 1. Take a picture (or video) of the tool you used to measure and collect data. 2. Using the App of your choice, explain the procedures you used to measure and collect data. Include the units. This upload should prove to the audience that you did everything you could to measure with precision and accuracy. If you used a scale, take a picture of the scale. 3. Upload to your Seesaw Learning Journal.