The DreamBox interactive white board Teacher Tool for this lesson is on our website under “Resources.” (www.dreambox.com/teachertools) 
Objective: 
The purpose of this lesson is for students think critically about the structure of the number line and locate positive and negative decimal numbers using magnification tools. 
Background: 
Students should have an understanding of place value to the hundredths place and be able to compare integers to the hundredths place. 
Instruction: 

Common Core State Standards 

Grade 
ID 
Domain 
Cluster 
Standard 
5 
5.NBT.3 
Number & Operations in Base Ten 
Understand the Place Value System 
Read, write and compare decimals to thousandths. 
6 
6.NS.6 
The Number System 
Apply and extend previous understanding of numbers to the system of rational numbers 
Understand a rational number as a point on the number line. Extend number line diagrams and coordinate axes familiar from previous grades to represent points on the line and in the plane with negative number coordinates. 
5 
5.SMP.2 
Standards for Mathematical Practice 
Reason abstractly and quantitatively. 

5 
5.SMP.6 
Standards for Mathematical Practice 
Attend to precision. 

5 
5.SMP.7 
Standards for Mathematical Practice 
Look for and make use of structure. 
Thera Pearce
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