B. Objects and substances can be classified by their physical and chemical properties. Mass is the amount of matter (or "stuff") in an object. Weight, on the other hand, is the measure of force of attraction (gravitational force) between an object and Earth.
The concepts of mass and weight are complicated and potentially confusing to elementary students. Hence, the more familiar term of "weight" is recommended for use to stand for both mass and weight in grades K-5. By grades 6-8, students are expected to understand the distinction between mass and weight, and use them appropriately.
Clarification for grades K-2: The use of the more familiar term ‘weight’ instead of the term “mass” is recommended for grades K-2.
Clarification for grades 3-5: In grade 3, introduce the term mass as compared to the term weight. In grade 4, investigate the concept of weight versus mass of objects. In grade 5, discuss why mass (not weight) is used to compare properties of solids, liquids and gases.
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Original Student Tutorials Science - Grades K-8
Measure and compare temperatures of various things in this interactive tutorial. Then determine if temperature impacts the melting rate of ice cream.
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Original Student Tutorials
This SaM-1 video provides the students with the optional "twist" for Lesson 17 and the Model Eliciting Activity (MEA) they have been working on in the Grade 3 Physical Science Unit: Water Beach Vacation.
To see all the lessons in the unit please visit https://www.cpalms.org/page818.aspx.
Type: Original Student Tutorial
In this video students learn that water can change its physical state through the addition or removal of heat. Students will learn the boiling and freezing points of water at standard pressure. They will also review how data can be used to create line graphs and these graphs can show patterns and changes to temperature over time.
This SaM-1 video is to be used with lesson 2 in the Grade 3 Physical Science Unit: Water Beach Vacation. To see all the lessons in the unit please visit https://www.cpalms.org/page818.aspx.
Type: Original Student Tutorial
Measure and compare temperatures of various things in this interactive tutorial. Then determine if temperature impacts the melting rate of ice cream.
Type: Original Student Tutorial
In this video Sam-1 introduces a Model Eliciting Activity (MEA) challenge. Students will take their prior experiences from the properties unit and apply their knowledge of investigating sea turtle nesting temperatures.
Students will develop a hypothesis, design an experiment, and support their reasoning to determine how to best study different methods for cooling sea turtle nesting areas.
Type: Original Student Tutorial
In this SaM-1 video, students will learn how to make observations based on the property of temperature using thermometers, while representing the data in line graphs.
Type: Original Student Tutorial