math 
Using a protractor is a skill that some students struggle to master  mainly because a protractor has two different scales  and if you use the wrong one, you'll have the wrong angle measurement. Watch this video as a good review to using a protractor: Students should be able to identify, define, draw, label and name the following triangles:
acute triangle obtuse triangle right triangle equilateral triangle scalene triangle isosceles triangle Go to this link for a good review: https://www.khanacademy.org/math/basicgeo/basicgeometryshapes/basicgeoclassifyingtriangles/v/scaleneisoscelesequilateralacuterightobtuse Students should be able to identify, define, draw, label and name the following:
point line line segment ray parallel lines perpendicular lines intersecting lines straight angle acute angle obtuse angle right angle reflex angle From www.mathisfun.com
Why find Prime Factors?A prime number can only be divided by 1 or itself, so it cannot be factored any further! Every other whole number can be broken down into prime number factors. It is like the Prime Numbers are the basic building blocks of all numbers. This idea can be very useful when working with big numbers, such as in Cryptography. Cryptography is the study of secret codes. Prime Factorization is very important to people who try to make (or break) secret codes based on numbers. That is because factoring very large numbers is very hard, and can take computers a long time to do. If you want to know more, the subject is "encryption" or "cryptography". A longer answer at this site: http://mathforum.org/library/drmath/view/57182.html More information from this site: https://www.eduplace.com/math/mw/background/6/03/te_6_03_fractions_ask.htmlFactors and Fractions: When Students Ask

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