Verified Document

Geometry Manipulative Elementary Geometry Manipulative Essay

Related Topics:

This will not only introduce elementary students to geometry, but also begin the complicated thinking associated with algebraic concepts. Using the formula to plug in the known degrees and then find the x is the beginning of much more abstract algebraic thinking. Handout

Circles rule our lives and have rules of their own! Each circle measures to 350 degrees, and with this knowledge we can begin to find unknown angles!

If a circle measures 360, that means that a half circle measures half -- 180 degrees. In a half circle, there are many different angle combinations. But, we know that they all equal out to 180 degrees.

Knowing this, we can find the great unknown!

Well, we know that the total of the two angles equals 180 degrees. Therefore, angle 1 = angle 2 = 180 degrees.

Let's just plug the numbers into the equation.

63 + x = 180.

The first step is to isolate the variable, in this case the x. We do this by getting rid of the 63 on the left side...

How? Well 63 is a positive number, so the equation really reads
+63 + x = 180.

This means that the opposite of +63 will get rid of that 63, and leave the x by itself. Therefore we subtract 63 from the left side of the equal sign. But there is a gold rule to math: whatever we do to one side, we MUST do to the other. Therefore we MUST also subtract 63 from 180 to balance the scale.

+63 + x = 180

- 63-63

0 + x = 117

So, x = 117 degrees.

Show me your mastery!!!

1.

What degree is x?

2.

What degree is x?

Answer Key

1.

x +45=180

-45 -45

x+0 = 135

x=135

135 degrees

2.

125+x=180

-125 -125

0+x=55

x=55

55 degrees

References

National Council of Teachers of Mathematics [NCTM]. (1989). Curriculum and…

Sources used in this document:
References

National Council of Teachers of Mathematics [NCTM]. (1989). Curriculum and evaluation standards for school mathematics. Reston, VA: NCTM.

x

45

x
Cite this Document:
Copy Bibliography Citation

Related Documents

Elementary Measurement, area, Perimeter, Volume
Words: 4943 Length: 18 Document Type: Term Paper

Unfortunately, the traditional textbook-based skills approach focuses on memorizing by rote measurement facts (e.g., equivalent measures such as 12 inches = 1 foot) and measurement procedures (e.g., how to use a ruler)" (1998, p. 15-9). Absent hands-on exercises, though, many young learners will not have an opportunity to construct an understanding of the process of measurement or a concept of measurement unit which can frequently result in mechanical and inappropriate

Using Visual Aids in Mathematics
Words: 1002 Length: 3 Document Type: Article Review

Mathematics InstructionIntroductionArt can play an important role in the teaching of math to young learners by providing visual and hands-on experiences that can enhance understanding and engagement. Using art in math instruction can help students make connections between mathematical concepts and real-world applications, which can make math more meaningful and relevant to them. One way art can be used in math instruction is through the use of manipulatives (D�angelo &

Early Childhood Development -- Curriculum
Words: 322 Length: 1 Document Type: Thesis

Another important strategy is that of exploring spatial relations. In such activities, children gain a better visual and practical sense of the spatial relations within mathematics. Scholastic's article portrays two girls discussing the appropriate spatial placement of a couch in a dollhouse. Such thinking methods can be influenced utilizing activities asking the children to map their house, their school, or their neighborhood in proportions. This will help open the

Framework of Implementing the Z. Mathematical Model to a Sixth Grade...
Words: 18348 Length: 67 Document Type: Thesis

Nature of the ProblemPurpose of the ProjectBackground and Significance of the Problem Brain Development Specific Activities to engage students Data-Driven Instruction Community Component of Education Research QuestionsDefinition of TermsMethodology and Procedures Discussion & ImplicationsConclusions & Application ntroduction The goal of present-day educational reformers is to produce students with "higher-order skills" who are able to think independently about the unfamiliar problems they will encounter in the information age, who have become "problem solvers" and have "learned how to learn,

Sign Up for Unlimited Study Help

Our semester plans gives you unlimited, unrestricted access to our entire library of resources —writing tools, guides, example essays, tutorials, class notes, and more.

Get Started Now