Examples
Jasmine is on a cruise and is going on a scuba diving excursion. Her elevations of 10 feet above sea level and 8 feet below sea level can be compared on a number line, where 0 represents sea level.Clarifications
Clarification 1: Instruction includes vertical and horizontal number lines, context referring to distances, temperatures and finances and using informal verbal comparisons, such as, lower, warmer or more in debt.Clarification 2: Within this benchmark, the expectation is to compare positive and negative rational numbers when given in the same form.
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Perspectives Video: Professional/Enthusiast
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STEM Lessons - Model Eliciting Activity
Let's Ride! is a model-eliciting activity that asks students to use pluses and minuses to indicate if eight models of 4-door sedans meet specific standards based on gas mileage, seating capacity, warranty, and type of engine. The students then have to rank the cars and indicate their top four choices.
Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. Click here to learn more about MEAs and how they can transform your classroom.
Rangoli is a traditional Indian art that is used in decorating the entrance of the house to welcome guests. In this activity students will explore and practice the concepts of positive numbers, negative numbers, absolute value, origin, coordinates etc. and will create their own Rangoli design at the end.
Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. Click here to learn more about MEAs and how they can transform your classroom.
MFAS Formative Assessments
Students are asked to graph -4, 0, and 4 on a number line and to explain the relationship between a number and its opposite in terms of the number line.
Students are asked to interpret values given in a chart that represent positive and negative deviations from average rainfall.
Students are asked to explain the meaning of positive and negative decimals within the context of a problem.
Students are given positive and negative fractions and asked to explain their meanings within the context of a problem.
Students are asked to use numbers to represent gains/losses and to interpret the meaning of zero in the context of football.
Original Student Tutorials Mathematics - Grades 6-8
Follow Matteo as he explores opposite numbers, positive and negative rational numbers, and zero in real-world contexts while planning and going on a cruise in Alaska in this interactive tutorial.
Student Resources
Original Student Tutorial
Follow Matteo as he explores opposite numbers, positive and negative rational numbers, and zero in real-world contexts while planning and going on a cruise in Alaska in this interactive tutorial.
Type: Original Student Tutorial
Tutorials
This video discusses the negative sign as meaning "opposite."
Type: Tutorial
This video guides you through comparisons of values, including opposites.
Type: Tutorial
This video uses a number line to describe the opposite of a number.
Type: Tutorial