This unit includes all you need to teach common core standard 3.MD.2. Students will measure and estimate liquid volume and masses of objects using grams(g), kilograms(kg), and liters(l).~Gram Lesson: A guided note-taker foldable to identify 1 gram, 10 grams and 100 grams. Great for math notebooks!!~Guess My Mass” : Students will use a number line to estimate how much each object will weigh, then measure each object using a scale and use a cubic square as the unit of measure. ~Liters Lesson: A g