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¹ÎÀº±â¼±»ý´ÔÀÇ ¼öÇÐÀÚ·á½Ç ÀÌ¿ë¹æ¹ý : https://goo.gl/bVaSff

¹Ýµå½Ã Ardobe reader ¸¦ ¼³Ä¡ ÈÄ¿¡ ÀڷḦ ÀÌ¿ë¹Ù¶ø´Ï´Ù.

ÀÚ·á´Â Geogebra¿Í TexÀÇ beamer¸¦ ÀÌ¿ëÇÏ¿© ¸¸µç °ÍÀÔ´Ï´Ù.

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20171110 : ¼¼ °³ÀÇ ÆòÇ༱ »çÀÌ¿¡ ¼±ºÐµéÀÇ ºñ(The Ratio Of Lengths Of Line Segments Between Three Parallel Lines) : https://goo.gl/xjmSsz

20171017 : µÐ°¢»ï°¢ÇüÀÇ ³ÐÀÌ(The Area of Obtuse Triangle) : https://goo.gl/mcPv9r  YouTube : https://youtu.be/T4mXVYmyBIY

20171017 : ¿¹°¢»ï°¢ÇüÀÇ ³ÐÀÌ(The Area of Acute Triangle) : https://goo.gl/qFnZqe

20171015 : »ï°¢ºñÀÇ È°¿ë(º¯ AB 5, º¯ AC 4, °¢ A 60µµ)(Application of Trigonometric Ratio(Side AB 5, Side AC 4, Angle A 60 Degree)) : https://goo.gl/XL338o

20171015 : »ï°¢ºñÀÇ È°¿ë(Á÷°¢»ï°¨Çü, ¿¹°¢ 30µµ, ºøº¯ 6)(Application of Trigonometric Ratio(Right Triangle, Acute Angle 30 Degree, Hypotenuse 6)) : https://goo.gl/as6aYf

20171012 : 90µµ »ï°¢ºñ(Trigonometric Ratio of 90 degree) : https://goo.gl/odAWwY

20171012 : 0µµ »ï°¢ºñ(Trigonometric Ratio of 0 degree) : https://goo.gl/R5U1Lg

20171010 : ¿¹°¢ÀÇ »ï°¢ºñ(Trigonometric Ratio of an Acute Angle) : https://goo.gl/NmtAF2 gif : https://goo.gl/ZkrCYW

20171009 : 60µµ »ï°¢ºñ(Trigonometric Ratio of 60 degree) : https://goo.gl/CZYHsD

20171009 : 30µµ »ï°¢ºñ(Trigonometric Ratio of 30 degree) : https://goo.gl/WyxGxq

20171009 : 45µµ »ï°¢ºñ(Trigonometric Ratio of 45 degree) : https://goo.gl/4SnY1W

20171006 : »ï°¢ºñ(Trigonometric Ratio) : https://goo.gl/BmxWQa

20170928 : ÇÑ ¿ø¿¡¼­ ±æÀÌ°¡ °°Àº µÎ ÇöÀº ¿øÀÇ Áß½ÉÀ¸·ÎºÎÅÍ °°Àº °Å¸®¿¡ ÀÖ´Ù.(Two chords with the same length in a circle are at the same distance from the center of the circle.) : https://goo.gl/r4MBMf  ¿µ»ó°­ÀÇ : https://goo.gl/1zRMhN

20170928 : ÇÑ ¿ø¿¡¼­ Áß½ÉÀ¸·ÎºÎÅÍ °°Àº °Å¸®¿¡ ÀÖ´Â µÎ ÇöÀÇ ±æÀÌ´Â °°´Ù.(The lengths of two chords at the same distance from the center in a circle are the same.) : https://goo.gl/i8FuhV : ¿µ»ó°­ÀÇ https://goo.gl/wvzYZi

20170928 : ¿øÀÇ Á߽ɿ¡¼­ Çö¿¡ ³»¸° ¼ö¼±Àº ±× ÇöÀ» ¼öÁ÷À̵îºÐÇÑ´Ù.(The perpendicular from the center of a circle to a chord bisects the chord.) : https://goo.gl/yBYW9A  ¿µ»ó°­ÀÇ : https://goo.gl/HTyvtk

20170928 : ¿ø¿¡¼­ ÇöÀÇ ¼öÁ÷À̺м±Àº ±× ¿øÀÇ Áß½ÉÀ» Áö³­´Ù.(The perpendicular bisector of chord passes through the centre of the circle.) : https://goo.gl/GmzVY6 ¿µ»ó°­ÀÇ : https://goo.gl/B17qB6

20170928 : ¸¶¸§¸ðÀÇ µÎ ´ë°¢¼±Àº ¼­·Î ´Ù¸¥ °ÍÀ» ¼öÁ÷À̵îºÐÇÑ´Ù.(The two diagonal lines of the rhombus divide each other vertically and bisect each other.) https://goo.gl/LD3o8J ¿µ»ó°­ÀÇ https://goo.gl/8mwLkW

20170928 : Á÷»ç°¢ÇüÀÇ µÎ ´ë°¢¼±Àº ±æÀÌ°¡ °°°í ¼­·Î ´Ù¸¥ °ÍÀ» À̵îºÐÇÑ´Ù.(Two diagonals of a rectangle are equal in length and bisect each other.) : https://goo.gl/Ek8ifX  ¿µ»ó°­ÀÇ : https://goo.gl/Yiqz3j

20170928 : »ç°¢ÇüÀÇ µÎ ´ë°¢¼±ÀÌ ¼­·Î ´Ù¸¥ °ÍÀ» À̵îºÐÇϸé ÆòÇà»çº¯ÇüÀÌ´Ù.(The diagonal lines of a rectangle are parallelograms when they are bisected.) https://goo.gl/RUXUHX ¿µ»ó°­ÀÇ https://goo.gl/tY194U

20170928 : ÇÑ ½ÖÀÇ ´ëº¯ÀÌ ÆòÇàÇÏ°í ±× ±æ±â°¡ °°Àº »ç°¢ÇüÀº ÆòÇà»çº¯ÇüÀÌ´Ù.(A rectangle with the same length of two pairs of parallel and opposite sides is a parallelogram.) : https://goo.gl/R8P8Yz ¿µ»ó°­ÀÇ : https://goo.gl/1HrdWb

20170928 : µÎ ½ÖÀÇ ´ë°¢ÀÇ Å©±â°¡ °¢°¢ °°Àº »ç°¢ÇüÀº ÆòÇà»çº¯ÇüÀÌ´Ù.(The rectangle with the same measure of two pairs of opposite angles is a parallelogram.) : https://goo.gl/3edB5q  ¿µ»ó°­ÀÇ : https://goo.gl/22EkJj

20170928 : µÎ ½ÖÀÇ ´ëº¯ÀÇ ±æÀÌ°¡ °¢°¢ °°Àº »ç°¢ÇüÀº ÆòÇà»çº¯ÇüÀÌ´Ù.(The rectangle with the same length of two pairs of opposite sides is a parallelogram.) : https://goo.gl/3gjZb4  ¿µ»ó°­ÀÇ : https://goo.gl/6jZ2f1

20170928 : ÆòÇà»çº¯ÇüÀÇ µÎ ´ë°¢¼±Àº ¼­·Î ´Ù¸¥ °ÍÀ» À̵îºÐÇÑ´Ù.(The diagonals of the parallelogram bisect each other.) : https://goo.gl/FG6XJ8 ¿µ»ó°­ÀÇ : https://goo.gl/9b78bo

20170928 : ÆòÇà»çº¯ÇüÀÇ µÎ ½ÖÀÇ ´ë°¢ÀÇ Å©±â´Â °¢°¢ °°´Ù.(Two pairs of opposite angles of the parallelogram are equal in measure.) : https://goo.gl/LhJTuJ  ¿µ»ó°­ÀÇ : https://goo.gl/sz6PjY

20170928 : ÆòÇà»çº¯ÇüÀÇ µÎ ½ÖÀÇ ´ëº¯ÀÇ ±æÀÌ´Â °¢°¢ °°´Ù.(Two pairs of opposite sides of the parallelogram are equal in length.) https://goo.gl/3Xj6FP ¿µ»ó°­ÀÇ https://goo.gl/dMEKr2

20170920 : Á¤»ç°¢»ÔÀÇ ³ôÀÌ(The Height of Square Horn) : https://goo.gl/5iQs1V

20170919 : ¿ø»ÔÀÇ ³ôÀÌ(The Height of Cone) : https://goo.gl/zRgdJi

20170918 : »ï°¢ÇüÀÇ ¼¼ ³»°¢ÀÇ À̵îºÐ¼±Àº ÇÑ Á¡(³»½É)¿¡¼­ ¸¸³ª°í ÀÌ Á¡(³»½É)¿¡¼­ ¼¼ º¯¿¡ À̸£´Â °Å¸®´Â °°´Ù.(The bisector of three angles of a triangle meet at one point(incenter) and the distance from this point(incenter) to the three sides is the same.) : https://goo.gl/996tKd ¿µ»ó°­ÀÇ : https://goo.gl/SgrHEd

20170918 : ³»½ÉÀÇ ÀÌÇØ(Understanding of Incenter) : https://goo.gl/2iZwzm ¿µ»ó°­ÀÇ : https://goo.gl/74G5Gs

20170918 : »ï°¢ÇüÀÇ ¼¼ º¯ÀÇ ¼öÁ÷À̵îºÐ¼±Àº ÇÑÁ¡(¿Ü½É)¿¡¼­ ¸¸³ª°í ÀÌ Á¡(¿Ü½É)¿¡¼­ ¼¼ ²ÀÁþÁ¡¿¡ À̸£´Â °Å¸®´Â °°´Ù.(The vertical bisector of the three sides of the triangle meet at one point (circumcenter) and the distance from this point (circumcenter) to the three vertices is the same.) : https://goo.gl/9adfzt  ¿µ»ó°­ÀÇ : https://goo.gl/WbNyz5

20170918 : ¿Ü½ÉÀÇ ÀÌÇØ(Understanding of Circumcenter) : https://goo.gl/Vavy3m ¿µ»ó°­ÀÇ : https://goo.gl/obLLBP

20170918 : 6-3-5 Á÷À°¸éüÀÇ °ø°£¿¡¼­ÀÇ ´ë°¢¼±ÀÇ ±æÀÌ(The length of the space diagonal of 6-3-5 regular hexahedron) : https://goo.gl/9uto47

20170912 : µÎ Á¡ »çÀÌÀÇ °Å¸® ±¸Çϱâ : https://goo.gl/P974vB

20170910 : RHA ÇյΠÁ÷°¢»ï°¢ÇüÀÇ ºøº¯ÀÇ ±æÀÌ¿Í ÇÑ ¿¹°¢ÀÇ Å©±â°¡ °¢°¢ °°À» ¶§ ÇÕµ¿ÀÌ´Ù.(If two right-angled triangles have their hypotenuses equal in length, and a pair of acute angles are equal in measurement, then the triangles are congruent.) : https://goo.gl/hFMjrH ¿µ»ó°­ÀÇ : https://goo.gl/7bGoGk

20170910 : 6-5-4 ±æÀÌ »ï°¢ÇüÀÇ ³ÐÀÌ(The Area of 6-5-4 Length Triangles) : https://goo.gl/DgocMF

20170906 : 30-60-90µµ »ï°¢Çü(30-60-90 Degree Triangles) : https://goo.gl/QoKiEp

20170905 : À̵»ï°¢ÇüÀÇ µÎ ¹Ø°¢ÀÇ Å©±â´Â °°´Ù.(The base angles of an isosceles triangle are congruent.) https://goo.gl/vdwPiZ  ¿µ»ó°­ÀÇ https://goo.gl/XEPKnm

20170905 : »ï°¢ÇüÀÇ µÎ ³»°¢ÀÇ Å©±â°¡ °°À¸¸é À̵ »ï°¢ÇüÀÌ´Ù.(If a triangle has 2 conguent angles, then it is isosceles) https://goo.gl/T48jLo  ¿µ»ó°­ÀÇ https://goo.gl/VfQrnv

20170905 : À̵»ï°¢ÇüÀÇ ²ÀÁö°¢ÀÇ À̵îºÐ¼±Àº ¹Øº¯À» ¼öÁ÷ À̵îºÐÇÑ´Ù.(The bisector of the apex angle of the isosceles triangle divides the base vertically.) https://goo.gl/yZaQy6  ¿µ»ó°­ÀÇ https://goo.gl/43UyDz

20170905 : À̵»ï°¢ÇüÀÇ µÎ ¹Ø°¢ÀÇ Å©±â´Â °°´Ù.(The base angles of an isosceles triangle are congruent.) https://goo.gl/vdwPiZ  ¿µ»ó°­ÀÇ https://goo.gl/XEPKnm YouTube : https://youtu.be/DTKM7ADW7sg

20170905 : ¼±ºÐÀÇ ¼öÁ÷ À̵îºÐ ¼± »óÀÇ Á¡À¸·ÎºÎÅÍ ¼±ºÐÀÇ ¾ç ³¡Á¡±îÁöÀÇ °Å¸®´Â °°´Ù.(Given a line segment, distances from a point on the perpendicular bisector to the each end point of the line segment are same.) https://goo.gl/B8J3rg ¿µ»ó°­ÀÇ https://goo.gl/Q44pBa YouTube : https://youtu.be/nJI_cEGW9xE

20170905 : Á÷°¢À̵»ï°¢Çü(Isosceles Right Triangle) : https://goo.gl/KRwC8v

20170901 : ÇÇŸ°í¶ó½º Á¤¸®(Pythagorean theorem) : https://goo.gl/X7ixxc

20170831 : ½Ã¿¡¸£ÇɽºÅ° »ï°¢Çü(Sierpiński triangle) (ÁÖ»çÀ§´øÁö±â ³îÀ̸¦ ÅëÇÏ¿©) : https://goo.gl/x2x3SF  YouTube : https://youtu.be/W5WFtnGlb1I https://youtu.be/0q1i7Pb53-k

20170825 : ºÐ»ê, Ç¥ÁØÆíÂ÷ ±¸Çϱâ(µµ¼öºÐÆ÷Ç¥) : https://goo.gl/cVL4qM

20170824 : ºÐ»ê, Ç¥ÁØÆíÂ÷ : https://goo.gl/h9Cmy8

20170821 : ÁÖ»çÀ§ ¸¸µé±â (°¢ ´«ÀÇ »ó´ëµµ¼ö) : https://goo.gl/hiQMkn

20170821 : ÃÖºó°ª ±¸Çϱâ : https://goo.gl/gTrji6

20170821 : Áß¾Ó°ª ±¸Çϱâ : https://goo.gl/ZAZzRA

20170820 : ÁÖ»çÀ§ ¸¸µé±â : https://goo.gl/aDGmni

20170820 : ÁÖ»çÀ§ ¸¸µé±â (ÀÚµ¿À¸·Î °³¼ö ¼¼±â) : https://goo.gl/d9wq3q

20170807 : Ÿ¿ø¿¡¼­ÀÇ ºû ¹Ý»ç(Reflection of Light on a Ellipse) : https://goo.gl/eQG9hs gif : https://goo.gl/NDfb31

20170806 : Æ÷¹°¼±¿¡¼­ÀÇ ºû ¹Ý»ç(Reflection of Light on a Parabola) : https://goo.gl/YxMsXS gif : https://goo.gl/4sgLtu

20170727 : Ä¥°¢Çü ¸Åµì(Heptagon Knot) : https://goo.gl/UJjqsA gif : https://goo.gl/iaf3BT ggb : https://goo.gl/r4xAJM

20170719 : ȯÀÇ ³ÐÀÌ(Area of Ring) : https://goo.gl/twBenf  gif : https://goo.gl/EeS4C4

20170715 : ¿øÀÇ ³ÐÀÌ(Area of Circle) : https://goo.gl/964yb1  gif : https://goo.gl/ivbdpm

20170624 : µÎ Á¡ÀÌ ÁÖ¾îÁ³À» ¶§ ÀÏÂ÷ÇÔ¼ö½Ä ã±â(Finding a linear function expression when two points are given) : https://goo.gl/pjhbCY ggb : https://goo.gl/io5Pkg YouTube : https://youtu.be/Z36ddetzesY

20170619 : $y=ax+b$ ÀÇ ±×·¡ÇÁ ±×¸®±â(Draw a graph of $y=ax+b$) : https://goo.gl/ggKoX8  ggb : https://goo.gl/ujH4Wo YouTube : https://youtu.be/cxMxkk3FKGg

20170616 : ÆÈ°¢Çü ¸Åµì(Octagon Knot) : https://goo.gl/QF8TAw gif : https://goo.gl/GlWNwO ggb : https://goo.gl/Fgs73b

20170615 : $y=ax+b(a\neq 0)$ÀÇ $y$ ÀýÆí($y$-intercept of $y=ax+b(a\neq 0)$)  : https://goo.gl/fr9o0m YouTube : https://youtu.be/bWoiyug5AjU

20170605 : $y=ax+b(a\neq 0)$ÀÇ $x$ ÀýÆí($x$-intercept of $y=ax+b(a\neq 0)$) : https://goo.gl/Tn76jk  YouTube : https://youtu.be/ncwk0fwdiYY

20170523 : Graph of $y=x^2$ : https://goo.gl/DNz1Vo gif : https://goo.gl/V1uEcu

20170503 : ÀÌÂ÷½ÄÀÇ ÀμöºÐÇØ ¿¬½À¹®Á¦(Exercises on factorization of quadratic polynomials : https://goo.gl/CK0akd ggb : https://goo.gl/HDtUYd

20170430 : ¹ÌÁö¼ö°¡ µÎ °³ÀÎ ¿¬¸³ÀÏÂ÷¹æÁ¤ ¿¬½À¹®Á¦(Exercises on simultaneous linear equations in two variables) : https://goo.gl/fvwNEG ggb : https://goo.gl/IjYMxT

20170420 : 2017Çг⵵ °æ³²°úÇаíµîÇб³ ¼öÇаú ÇöÀ忬±¸ Ư°­ : https://goo.gl/otMzHE

20170419 : Ÿ¿ø³»ºÎ¿¡¼­ÀÇ Æ÷¶ô¼±(Geogebra¸¦ È°¿ëÇÑ ¿¬±¸ÀÇ ½ÇÁ¦) : https://goo.gl/XpUH0H

20170408 : (a+b)(a-b)=a^2-b^2 : https://goo.gl/up8rpo

20170410 : ¿ø ¾È¿¡ ÀÖ´Â µÎ Á¡À» Áö³ª¸é¼­ ÀÌ ¿ø¿¡ ³»Á¢ÇÏ´Â ¿øÀ» ÀÛµµÇÏ¿©¶ó.(Draw a circle that passes through the two points in the circle and touches this circle.) : https://goo.gl/62XCxK YouTube : https://youtu.be/VMKFmql4T-c

20170408 : (a-b)^2=a^2-2ab+b^2 : https://goo.gl/KpJEeK

20170408 : (a+b)^2=a^2+2ab+b^2 : https://goo.gl/4qoe3r

20170403 : (a+b)(c+d)=ab+ac+bc+bd : https://goo.gl/7i2qao

20170403 : m(a+b)=ma+mb : https://goo.gl/sfyR1M

20170401 : sqrt{n} : https://goo.gl/1ULORR

20170401 : n+sqrt{2} : https://goo.gl/KQ8Ume

20170401 : sqrt{2} : https://goo.gl/gw0nLv

20170331 : Triangle rotation : https://goo.gl/MlzHzY   gif : https://goo.gl/SPKd3A

20170331 : frac{1}{sqrt{a}-sqrt{b}}=frac{sqrt{a}+sqrt{b}}{a-b} : https://goo.gl/L8FHuh

20170329 : (sqrt{75}+frac{1}{sqrt{12}})div sqrt{3} https://goo.gl/QxR5UW

20170328 : ma+mb=m(a+b) : https://goo.gl/nu6Nwa

20170327 : ºÐ¸ð(sqrt{a}-sqrt{b}, sqrt{a}+sqrt{b})ÀÇ À¯¸®È­(Rationalization of Denominator (sqrt{a}-sqrt{b}, sqrt{a}+sqrt{b}) ) : https://goo.gl/7FsLJ9

20170327 : ºÐ¸ð(sqrt{a})ÀÇ À¯¸®È­(Rationalization of Denominator(sqrt{a})) : https://goo.gl/4tN0HR

20170325 : a div b = a times frac{1}{b} ( b>0) : https://goo.gl/Icksiu

20170322 : sqrt{a^2b}=|a|sqrt{b} ( b>0) : https://goo.gl/B90yOF

20170321 : frac{sqrt{a}}{sqrt{b}}=sqrt{frac{a}{b}} (a, b>0) : https://goo.gl/xuoLrN

20170321 : sqrt{a}sqrt{b}=sqrt{ab} (a, b>0) : https://goo.gl/eXzgng

20170320 : 5a times 2b =10 ab : https://goo.gl/SF9bEy

20170319 : m, n ÀÌ ÀÚ¿¬¼öÀÏ ¶§,(frac{a}{b})^m=fra{a^m}{b^m}((frac{a}{b})^m=frac{a^m}{b^m}( m, n are natural numbers.) ) : https://goo.gl/R4Gc6v

20170317 : m, n ÀÌ ÀÚ¿¬¼öÀÏ ¶§,(ab)^m=a^mb^m((ab)^m=a^mb^m( m, n are natural numbers.) ) : https://goo.gl/xZzmkB

20170317 : m, n ÀÌ ÀÚ¿¬¼öÀÏ ¶§, (a^m)^n=a^{mn}((a^m)^n=a^{mn}( m, n are natural numbers.) ) : https://goo.gl/YFkdBN

20170316 : a>b Leftrightarrow sqrt{a}<sqrt{b} (a, b>0) : https://goo.gl/7s6fQJ

20170315 : m, n ÀÌ ÀÚ¿¬¼öÀÏ ¶§, a^m div a^n (a^m div a^n ( m, n are natural numbers.) ) : https://goo.gl/2zMpj0

20170314 : m, n ÀÌ ÀÚ¿¬¼öÀÏ ¶§ a^m times a^n = a^{m+n}(a^m times a^n = a^{m+n} (m, n are natural numbers.)) : https://goo.gl/hsrTZr

20170314 : Á¤¼ö, À¯¸®¼ö(Integer, Rational Number) : https://goo.gl/dUW5zV

20170314 : À¯ÇѼҼö, ¹«ÇѼҼö, ¼øȯ¼Ò¼ö(Finite Decimal, Infinite Decimal, Repeating Decimal) : https://goo.gl/wAbtbf

20170312 : Á¦°ö±ÙÀÇ ¼ºÁú(a<0)(Square Root Property for a<0) : https://goo.gl/m5GQFt

20170312 : Á¦°ö±ÙÀÇ ¼ºÁú(a>0)(Square Root Property for a>0) : https://goo.gl/MnpGng

20170303 : 0.16ÀÇ Á¦°ö±ÙÀ» ±¸ÇÏ¿©¶ó(Find the square root of 0.16) : https://goo.gl/wBks4y

20170302 : ¾çÀÇ Á¦°ö±Ù°ú À½ÀÇ Á¦°ö±Ù(Positive and Negative Square Root) : https://goo.gl/OEwqZU

20170302 : Á¦°ö±ÙÀÇ ¶æ(Square Root Mean) : https://goo.gl/FH7isV

20170302 : Á¤»ç°¢ÇüÀÇ ÇÑ º¯ÀÇ ±æÀÌ¿Í ³ÐÀÌ(The Length and Width of one Side of a Square) : https://goo.gl/2ZqYFA

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