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You are watching: Using positive and negative numbers in context

Are these suitable for my students?

We have assigned lessons to grades based on the Typical Core State Standards for Mathematical Content. During this change period, you should use your judgement regarding where they fit in your present course.

Using Optimistic and also Negative Numbers in Conmessage

## Mathematical goals

This lesson unit is intended to aid you assess just how well students are able to understand and usage directed numbers in context. It is intfinished to aid determine and help students who have difficulties in ordering, comparing, adding, and also subtracting positive and negative integers. Particular attention is phelp to the use of negative numbers on number lines to check out the structures:

Starting temperature + Change in temperature = Final temperature Final temperature – Change in temperature = Starting temperature Final temperature – Starting temperature = Change in temperature

## Introduction

The leskid unit is structured in the adhering to way:

Before the lesboy students work individually on an assessment task designed to disclose their existing knowledge. You evaluation their responses and compose questions to assist them improve their work-related.After a whole-class arrival, students occupational together in tiny teams on a card-matching job.In the very same little teams, they then develop directed number calculations to correspond to temperature changes or city temperatures. To end the lesson there is a whole-class conversation.In a follow-up leschild, students aobtain work alone on a task equivalent to the assessment task.

## Materials required

Each student will certainly need a copy of the assessment job Temperature Changes and also Temperature Changes (revisited), a copy of the Temperature Scale, a mini-whiteboard, a pen, and an eraser.Each tiny team of students will certainly require a collection of cut-up cards from the sheets City Temperatures and Changes in Temperature, a glue stick, and a big sheet of paper for making a poster.You will likewise need one copy of the cut-up cards Overview to Negative Numbers.

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## Time needed

15 minutes before the lesboy, a 100-minute lesson (or two 55-minute lessons), and 20 minutes in a follow-up lesson. Timings are approximate and will depfinish on the needs of your course.

## Mathematical Practices

This lesson requires a selection of mathematical practices from the requirements, through focus on:

## Mathematical Content Standards

This lesboy asks students to choose and also use mathematical content from throughout the grades, including the content standards:

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" title="The University of California at Berkeley" />
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