Grade 3 Topic IV Mass and Volume of Solids and Liquids Office of Academics - Department of Science

Benchmarks SC.3.P.8.1 Measure and compare temperatures of various samples of solids and liquids. Cognitive Complexity: Level 2: Basic Application of Skills & Concepts SC.3.P.8.2 Measure and compare the mass and volume of solids and liquids. Cognitive Complexity: Level 2: Basic Application of Skills & Concepts LAFS.3.SL.1.1 Engage effectively in a range of collaborative discussions (one-on-one, in groups, and teacher-led) with diverse partners on grade 3 topics and texts, building on others’ ideas and expressing their own clearly. MAFS.3.MD.2.4 Generate measurement data by measuring lengths using rulers marked with halves and fourths of an inch. Show the data by making a line plot, where the horizontal scale is marked off in appropriate units—whole numbers, halves, or quarters. Office of Academics - Department of Science

Let’s watch! All matter has mass and volume. Mass and volume can be measured. Office of Academics - Department of Science

What is mass?  Mass is the amount of matter an object has.  Mass is a property of matter that can be measured. Office of Academics - Department of Science

What tools do scientists use to measure mass? Office of Academics - Department of Science Balance & gram piecesPan balance & gram pieces Triple Beam balance Electronic balance

Using a Balance to measure Mass A balance scale compares a KNOWN mass, to an UNKNOWN mass. When the scale is “balanced” on both sides, you know the mass of the unknown. Office of Academics - Department of Science  What is the mass of cube x?  How do you know?

But what is Weight?  Weight is the measure of the pull of gravity on an object.  The weight of an object is different in different places. Office of Academics - Department of Science The mass of an object is the same no matter where the object is!

Using a Spring Scale A Spring Scale is used to measure the pull of gravity on an object (weight). A spring scale has Newtons (N) metric units. As gravity pulls down on an object, the weight is measured. You see spring scales commonly used in grocery stores. WEIGHT Office of Academics - Department of Science

Mass and Weight Office of Academics - Department of Science

What is Volume?  It is the amount of space that an object takes up.  Volume is also a property of matter that can be measured.  Solids, Liquids, and gases all have volume. Office of Academics - Department of Science

Measuring Volume Find three rectangular prisms, or boxes around the classroom. Make sure they are different in size. Use the cm ruler to find the length, width, and height of each rectangular prism. Office of Academics - Department of Science

Measuring Volume Complete the table below using the information you gathered. Use the formula Length X Width X Height = Volume. Office of Academics - Department of Science BOXLENGTH (cm) WIDTH (cm) HEIGHT (cm) VOLUME (cm) A B C Which of the boxes can hold less? How do you know?

Measuring Volume Fill a graduated cylinder with 70 mL of water. Place the first rock in the water and record the new level of the water in the data table. Take out the rock and make sure that the graduated cylinder still has 70 mL of water. Repeat steps 1-4 for all three rocks. Complete the table. Office of Academics - Department of Science

Measuring Volume Office of Academics - Department of Science ROCKVOLUME OF WATER (mL) VOLUME OF WATER WITH STONE (mL) DIFFERENCE IN VOLUME (mL) 170 mL 2 3 Which rock had the greatest volume?

REVIEW Questions 1. What do you call the amount of matter an object has? 2.How is matter measured? 3.What does the word volume describe about an object? 4.What tools could you use to measure volume? BONUS: Would your weight change on the moon? What about your mass? Explain. Office of Academics - Department of Science

What is Temperature? Temperature is the average speed of the particles in a substance. Temperature is measured with a thermometer. The units of measurement are Degrees Celsius (°C) & Degrees Fahrenheit (°F) Celsius Rhyme Thirty's hot Twenty's nice Ten's cold Zero's ice Office of Academics - Department of Science

Temperature Office of Academics - Department of Science

MEASURING TEMPERATURE Using a thermometer, get in groups of 4 to compare the inside and outside temperature of the classroom. Take turns recording the inside and outside temperature every hour of the school day. Office of Academics - Department of Science

MEASURING TEMPERATURE Office of Academics - Department of Science HOUR 1HOUR 2HOUR 3HOUR 4 INSIDE TEMPERATURE OUTSIDE TEMPERATURE

Analyze your data Office of Academics - Department of Science Compare the temperatures recorded. In your group, discuss and explain the difference of the measured temperatures. Think about how the data collected could have been different? Why?

Vocabulary Matter Property Mass Volume Weight Meter Centimeter Liter Milliliter Balance Meter stick Thermometer Temperature Celsius Fahrenheit Degrees Office of Academics - Department of Science