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Topic: Focus (geometry)

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In the News (Mon 19 Aug 19)

  PCTM Position Paper: Geometry for All
The focus of these strands throughout the grade-levels is to develop the learners thinking abilities, use the structure and nature of the geometric concepts, to analyze and solve problems that arise in their everyday activities.
Geometry is the branch of mathematics that studies visual patterns.
In most school geometry programs, the van Hiele model is contradicted by the traditional reality in that geometry is viewed as a high school course where most students are exposed to a formal, abstract level with little to no regard for their appropriate conceptual readiness.
www.pctm.org /GeometryForAll.html   (3228 words)

 About Sacred Geometry
Geometry is the very basis of our reality, and hence we live in a coherent world governed by unseen laws.
The understanding of geometry as an underlying part of our existence is nothing new and in fact, the Golden Mean and other forms of geometry can be seen imbedded in many of the ancient monuments that still exist today.
Geometry of seven interconnected circles, the Seed of Life is considered to be the basic unit of information necessary for the formation of all material substance.
www.spiraloflight.com /sacred_geometry.htm   (3800 words)

 Resource: Teaching Math: A Video Library, 9-12
Alice in Wonderland is the focus of a lesson on algebra and functions for a tenth-grade class.
Geometry from a synthetic perspective and mathematical structure are the focus of this program where students create parallelograms.
Students focus on geometry from a synthetic perspective and mathematical structure as they draw triangles using specific measurements.
www.learner.org /resources/series34.html   (505 words)

An active focus model means that $toplevel will claim the input focus for itself or its descendants, even at times when the focus is currently in some other application.
Otherwise the current geometry for $toplevel is returned (this is the most recent geometry specified either by manual resizing or in a geometry method).
When gridded geometry management is enabled then all the dimensions specified in minsize, maxsize, and geometry methods are treated as grid units rather than pixel units.
www.math.ucla.edu /computing/docindex/perl-Tk-man-170.html   (3844 words)

 Conic section Summary
Likewise, radiation or sound emitted from a source at the focus of a reflector with a parabolic section is reflected in a parallel beam.
In projective geometry, each of the conics can be defined as the locus of all points equidistant from a fixed point (the focus) and a fixed curve (the directrix); see this detailed description.
Focus (geometry), an overview of properties of conic sections related to the foci.
www.bookrags.com /Conic_section   (3862 words)

 Focus (geometry) - Wikipedia, the free encyclopedia
In geometry, the foci (singular focus) are a pair of special points used in describing conic sections.
A parabola also only has one focus (although it is sometimes useful to speak of a focus at infinity); but there is a line called the directrix such that the distance from any point of the parabola to the focus is equal to the (perpendicular) distance from the point to the directrix.
For the ellipse, both the focus and the center of the directrix circle have finite coordinates and the radius of the directrix circle is greater than the distance between the center of this circle and the focus; thus, the focus is inside the directrix circle.
en.wikipedia.org /wiki/Focus_(geometry)   (661 words)

 focus - Search Results - MSN Encarta
Focus (geometry), a fixed point in a plane that, in combination with a particular straight line or another point, specifies a type of curve called a...
Earthquake: Focus and Epicenter, glossary of earthquake terms
achromatic focus, autofocus camera lenses, eye, focal length, focus and depth of field
encarta.msn.com /focus.html   (184 words)

 Mathematics - Grade 3   (Site not responding. Last check: 2007-11-03)
Emphasis is placed on understanding numerical relationships as expressed in ratios, proportions and percents and on students' abilities in estimation, mental computations and generalization of numerical patterns.
Both the area of Geometry and the area of Data Analysis, Statistics and Probability were allotted 18 percent of the items.
The Geometry Unit includes properties and construction of figures, proofs and theorems, history of geometry, transformations, logic, and problem solving.
www.plsd.k12.pa.us /distrcur/GL15466.HTM   (1197 words)

 Tk Reference Manual: wm   (Site not responding. Last check: 2007-11-03)
An active focus model means that window will claim the input focus for itself or its descendants, even at times when the focus is currently in some other application.
Otherwise the current geometry for window is returned (this is the most recent geometry specified either by manual resizing or in a wm geometry command).
When gridded geometry management is enabled then all the dimensions specified in wm minsize, wm maxsize, and wm geometry commands are treated as grid units rather than pixel units.
tmml.sourceforge.net /doc/tk/wm.html   (4576 words)

 [No title]
Focus on one or more features such as SAS, the angle of parallelism, Saccheri quadrilaterals, equivalence and area, etc., and discuss them using a particular model such as the Poincaré disk.
Focus on one or more features such as SAS, Saccheri quadrilaterals, equivalence and area, etc., and discuss them using a particular model such as the Klein model.
Discuss the properties of the affine geometries and/or the projective geometries such as the number of lines and points.
oregonstate.edu /instruct/mth338/garity/Topics.htm   (504 words)

 Mrs. Croco's Classes
Cabri® Geometry is also used by the students as an interactive component for understanding geometric relationships.
The focus of these assignments will be to look at applications of geometry in the arts, other branches of mathematics, nature, and social sciences.
This geometry course is part of a double period math/science block.
www.ncusd203.org /kennedy/teams/panthers/Mrs_Croco.html   (1057 words)

 Communicate with window manager   (Site not responding. Last check: 2007-11-03)
The focus model defaults to passive, and Tk's focus command assumes a passive model of focussing.
Otherwise the current geometry for $toplevel is returned (this is the most recent geometry specified either by manual resizing or in a geometry command).
When gridded geometry management is enabled then all the dimensions specified in minsize, maxsize, and geometry commands are treated as grid units rather than pixel units.
www-users.cs.umn.edu /~amundson/perl/perltk/wm.htm   (3592 words)

 The Geometry Forum Guided Tour
In my talk tomorrow morning "Geometry and Curricular change" I mostly focus on transformations as the dynamic software does them so nicely and the notion that geometry is dynamic leads to a necessity for transformations.
Students should know that geometry is important in the world in which we live-- from the basics, they can branch out to other topics of interest.
Some possible directions include: 3-D geometry--build and study polyhedra, make them different ways, unit origami is a nice approach, branch out and look at the history of the shapes, the etymology of their names, occurrances in nature, applications, not to mention their properties an related theorems.
mathforum.org /~sarah/topics/more.geometry.html   (1765 words)

 Geometry Activity Books And 3d Shapes
Enriches any geometry class by focusing on the concept as well as the skill.
Teaching geometry area and measuring facts is easy with activities using 3D geometric shapes.
Focus on shape, size, symmetry, transformation, location and position, and coordinate geometry.
www.learningthings.com /items.asp?cc=GEOMETRYBOOKS   (1334 words)

 The Math Forum - Math Library - Geometry
A collection of handouts for a two-week summer workshop entitled 'Geometry and the Imagination', led by John Conway, Peter Doyle, Jane Gilman and Bill Thurston at the Geometry Center in Minneapolis, June 17-28, 1991.
Some notes on a most general definition of "geometry," first elucidated by Felix Klein, which is based on a set of geometric invariants under a group of transformations.
The FoCM's primary aim is to further the understanding of the deep relationships between mathematical analysis, topology, geometry and algebra and the computational process as they are evolving together with the modern computer.
mathforum.org /library/topics/geometry   (2331 words)

 Geometry, Imaging and Virtual Environments
In computational geometry, the focus is on the development of provably efficient algorithms for abstracted versions of the problem.
In this project we will extend the computational geometry focus by using less abstraction in the problems to be solved.
To focus the research, three classes of multi-criteria problems are considered in subprojects.
www.cs.uu.nl /centers/give/geometry/compgeom/gogo   (1178 words)

 Sacred Geometry
The Golden Mean was used in the design of sacred buildings in ancient architecture to produce spiritual energy that facilitated connectivity with spiritual realms through prayer.
Particular shapes are energy emitters; they are shapes that produce a type of penetrating carrier wave which Chaumery and De Belizal named 'negative green', which acts as carrier-like radio waves that carry sound information.
You’ll be amazed at how the geometries seem to magically synchronize with absolutely any type of music.
www.spiritlight.org /ls_sacred.html   (4026 words)

 Feature - Process Versus Geometry
Process-oriented CAM systems are extremely well suited for production machining work where the geometry may not be the most demanding aspect of the job compared to the overall process complexity and the requirement to optimize the process as much as possible to reduce overall machining time.
A good example would be the geometry for a complex mold cavity for an injection molded part or the stamping die for a sheet metal automotive panel.
Associating workpiece geometry, processes and the corresponding tool path (fully regenerating this tool path when either the geometry or the process are changed) is another capability that one would expect with a process-oriented CAM system.
www.mmsonline.com /articles/040302.html   (2168 words)

 focus - OneLook Dictionary Search
FOCUS, Focus, focus : CCI Computer [home, info]
Phrases that include focus: soft focus, focus group, depth of focus, principal focus, virtual focus, more...
Words similar to focus: center, centering, centre, concenter, concentrate, foci, focusable, focused, focuser, focuses, focusing, focusless, focussed, focussing, nidus, pore, rivet, sharpen, stress, focal point, more...
www.onelook.com /?w=focus   (586 words)

 Geometry Day   (Site not responding. Last check: 2007-11-03)
The focus of GEOMETRY DAY would be on discrete geometry, computational geometry and graph theory.
GEOMETRY DAY has been supported by the National Science Foundation.
Application for partcipation should be made as soon as possible and no later than October 12, 2003.
www.cs.unt.edu /geometryday   (140 words)

 Holloway's Golf Force Focus Series Traditional Belly Long Side Saddle Putters   (Site not responding. Last check: 2007-11-03)
Combining our Force Focus design based on the geometry of the golf ball, with popular 2 Ball style.
The benefits of Force Focus sight alignment, with the advantages of 2 ball sight alignment in one putter head design.
Backbone has the same brass weighting placement as the Force Focus with the added arch back weight in a one piece aluminum body.
holloways.homestead.com /golf.html   (922 words)

 Amazon.com: Addison Wesley Secondary Math: Focus on Geometry : An Integrated Approach: Books: Alan R. Hoffer,Roberta ...   (Site not responding. Last check: 2007-11-03)
I learned the material well, and have excelled in class, and in geometry level math league competitions, due to that.
I have looked at the old geometry books and I think that these are a great alternative.
This book would be appropriate for a beginning geometry student.
www.amazon.com /Addison-Wesley-Secondary-Math-Integrated/dp/020186780X   (871 words)

 [No title]   (Site not responding. Last check: 2007-11-03)
Topics include parallel and perpendicular lines, congruent triangles, quadrilaterals, proofs, similarity and proportion, right triangle trigonometry, circles, perimeter and area, surface area and volume, and coordinate geometry.
The textbook for this course is Glencoe Geometry.
The California Content Standards for Geometry will be incorporated into the daily lessons, assignments, and assessments.
www.cvhs.com /mmsingh/Geofocus.doc   (373 words)

This course is an in-depth study of the real numbers, functions and their graphs, composition, quadratic functions, rational functions and their graphs, inverse and circular functions, right triangle trigonometry and applications.
Concepts in the areas of estimation of answers, problem solving techniques, measurement skills, geometry and data handling will be stressed.
This is a continuation of Focus on Algebra/Geometry I. Topics to be covered include: systems of equations, matrices, quadratic equations, basic trigonometric functions, and statistics.
www.minuteman.org /acad_elearn/math.html   (2165 words)

As far back as Greek Mystery schools 2500 years ago, we as a species were taught that there are five perfect 3-dimensional forms -The tetrahedron, hexahedron, octahedron, dodecahedron, and icosahedron.
Read all of the thumbnail descriptions and view all thirteen geometries.
Sacred Geometry Design Sourcebook, by Bruce Rawles (Eagle Point, Oregon: Elysian Pub.,1997).
www.sacred-geometry.com /sacredgeometry.html   (2890 words)

 SparkNotes: ACT: Coordinate Geometry
Coordinate geometry is geometry dealing primarily with the line graphs and the (x, y) coordinate plane.
Most of the questions on coordinate geometry focus on slope.
Once you know and understand this equation, you should be able to sketch a circle in its proper place on the coordinate system if given its equation.
www.sparknotes.com /testprep/books/act/chapter10section5.rhtml   (2191 words)

 Focus - Wikipedia, the free encyclopedia
Focus (album), by the US metal band Cynic
Focus Humanitarian Assistance an international emergency relief organization
FOCUS Brands, Inc., a food and confectionery company
en.wikipedia.org /wiki/Focus   (220 words)

A good point to start planning for a focus on geometry, including platonic solids and Polyhedra.
Problems are mostly based in number or geometry and could fit into lessons in these areas, or be used as part of a problem solving focus
Explores aspects of geometry by explaining the various forms of symmetry found in the design of oriental carpets
www.nzmaths.co.nz /Links/Geometry/Geometry.aspx   (2229 words)

 Activity Resources, Inc. :: Geometry :: Books :: Focus on Geometry   (Site not responding. Last check: 2007-11-03)
Focus on Geometry leads students through a careful sequence of hands-on activities to discover, formulate, and apply rules for area and perimeter of rectangles.
These rules are extended and modified for the parallelograms, triangles, trapezoids, and circles in the same hands-on discovery style.
We hope you and your students have as much fun using our products as Mary and our other authors had making them.
www.activityresources.com /store/product.php?productid=241   (182 words)

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