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Using a Balance

Using a Balance

TEKS Objective

The student is expected to collect, record, and analyze information using tools, including calculators, microscopes, cameras, computers, hand lenses, metric rulers, Celsius thermometers, mirrors, spring scales, pan balances, triple beam balances, graduated cylinders, beakers, hot plates, meter sticks, compasses, magnets, collecting nets, and notebooks; timing devices, including clocks and stopwatches; and materials to support observation of habitats of organisms such as terrariums and aquariums.


Essential Understanding

The student knows how to use a variety of tools, materials, equipment, and models to conduct science inquiry.

Science Background

Understanding the Basics of Balancing and Measuring Techniques: Gary Grim and Bruce Mitchell, Balance Technology Inc. (PDF) - This article explains, in detail, the fundamental scientific principles of balancing.

Understanding the Basics of Balancing and Measuring Techniques
Gary Grim and Bruce Mitchell, Balance Technology Inc. (PDF), www.balancetechnology.com

Balance Theory: Ohaus (website) - This teacher-focused section of the Ohaus website describes how mechanical balances work and explains the physics involved in the use of triple beam balances.

Balance Theory
Ohaus (website), www.ohaus.com

Signature Lesson

Mass: Ohio State University (PDF) - This lesson focuses on the use of balances. Students collect, record, compare and analyze the mass of several objects using a triple beam balance. They learn that mass is a physical property by which objects can been classified.

Mass
Ohio State University (PDF), www.gk-12.osu.edu

Supporting Lessons

Setting the Standard: Utah Education Network (website) - Students learn about measuring and weighing objects; describe relationships among units of measurement for length, capacity and weight; and use tools to measure angles.

Setting the Standard
Utah Education Network (website), www.uen.org

Elaboration Lessons and Extensions

Measuring: Oklahoma State University (PDF) - Students explore the relationship between weight and mass, become familiar with dimensions and volume, and practice using metric measures.

Measuring
Oklahoma State University (PDF), www.gk-12.osu.edu

Assessment Ideas

Ask students to weigh a small dry sponge, and then soak the sponge to capacity with water and weigh it again. Have them follow up by writing a math problem that expresses the weight of water held by the sponge.

Literature Connections

Measuring Penny. Leedy, Loreen (ISBN-13: 978-0805065725)

Weighing and Measuring. Jennings, Terry (ISBN-13: 978-0817239633)

Balances. Richardson, Adele (ISBN-13: 978-0736849609)

Related Science TEKS

(4.4A) Tools for Collecting and Analyzing Information              
The student is expected to collect, record, and analyze information using tools, including calculators, microscopes, cameras, computers, hand lenses, metric rulers, Celsius thermometers, mirrors, spring scales, pan balances, triple beam balances, graduated cylinders, beakers, hot plates, meter sticks, compasses, magnets, collecting nets, and notebooks; timing devices, including clocks and stopwatches; and materials to support observation of habitats of organisms such as terrariums and aquariums.

(4.4B) Safety Equipment                
The student is expected to use safety equipment as appropriate, including safety goggles and gloves.

Related Math TEKS

4.11A The student is expected to estimate and use measurement tools to determine length (including perimeter), area, capacity and weight/mass using standard units SI (metric) and customary.

4.11B   The student is expected to perform simple conversions between different units of length, between different units of capacity, and between different units of weight within the customary measurement system.

4.11C   The student is expected to use concrete models of standard cubic units to measure volume.

4.11D  The student is expected to estimate volume in cubic units.

4.11E   The student is expected to explain the difference between weight and mass.

4.12A  The student is expected to use a thermometer to measure temperature and changes in temperature.

Additional Resources

Metric Mania: The Science Spot (website) - This series of metric lessons includes labs on length, mass, volume, density, temperature and conversions, enabling students to use metric tools and equipment and learn how to use the metric system of measurements.

Metric Mania
The Science Spot (website), www.sciencespot.net

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