The purpose of this Selfie Science is to make your own metric ruler. Do your best to ensure that your ruler is accurate. Use recycled materials to create your ruler. 1. Find everyday objects that are 1 centimeter long. 2. Make a decimeter ruler (10 cm) , a metric ruler (30 cm), or a meter stick (100 cm). 3. Take a picture of your model metric ruler. 4. Use the App of your choice to explain your model. Uploads to Seesaw.