1. 7A8 Measuring Volume Grade 7

2. Margin Question Name 3 volume measurements in daily life: – 1 Quart of ice cream – 1 Gallon of gas – 2 Liters of pop – 1 Pint of milk – 1 Cup of coffee

3. Vocabulary Volume: amount of space a material takes up 3D: 3 Dimensional = 3 Directional – Usually Length, Width, and Height Diameter (d): distance across a circle through its center

4. Background Metric Volume: – Large Volumes: liter (L), cubic meter (m 3 ) – Small: milliliter (mL), cubic centimeter (cm 3 ) Volumes may be measured several ways. – Liquids: use measuring cup or graduated cylinder. – Solids: there are two types Regular (straight edges) like a cube – Measure Length, Width, Height and multiply Irregular (curved edges) like a marble – Displacement of liquid usually in a graduated cylinder

5. Materials 6 Objects: 2 cubes, 2 cylinders, 2 bars Graduated cylinder, water, and paper towels Goggles Metric ruler Bar/Cube= Multiply LxWxH Cylinder=multiply π x d x d x h / 4 or displacement

6. Solid Volumes Regular: for Bar, measure Length, Width, and Height (in same units) and multiply for units 3. Irregular: Cylinder – Measure Diameter and Height, then multiply πd 2 h/4 for units 3, or… – Displacement: measure water volume in a graduated cylinder, add cylinder to water, check water volume increase, then subtract for solid mL.

7. Measure Volume (Turn book on side) Turn lab book on its side and make five columns: 2 narrow and 3 wide 1.Object (Light gray bar, Dark gray bar, Light gray cube, Dark gray cube, Light gray cylinder, and Dark gray cylinder) 2.Method (Displacement or Measurement) 3.Measure (Length, Width, Height, Diameter) 4.Calculation (L x W x H, or πd2h/4) 5.Volume (mL or cm 3 ) write small

8. Procedure Work in pairs. Share items with table partners. Find volumes of objects using best method. Measure, calculate, and record in lab book. Compare your data with table partners. If you think you are wrong, repeat measurements. List all 6 objects in order from least to greatest volume. Draw their pictures in your lab book.

9. 7A8 Volume Analysis: pA35 #1,4,6 On separate paper, answer each in 1 paragraph. 1a) Explain how you found volume of cubes. 1b) Explain how you found volume of cylinders. 1c) Explain how you found volume of bars. 4) Explain how you would find volume of a box, pen, stone, orange juice, and a book. 6) Explain volume to a 10 year old. Include two examples familiar to a child. Include diagrams.