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SE page 374
Information about Euclid


mathsisgoodforyou.com
Provides biographical information about Euclid. Click on the link to Elements for information and visuals about Euclid’s book.
( http://www.mathsisgoodforyou.com/people/euclid.htm )
Clark University: This site was developed by D.E. Joyce.
Use the interactive geometry applet to learn about Euclid’s Elements.
( http://aleph0.clarku.edu/~djoyce/java/elements/elements.html )
SE page 379
Explore geometric properties of angles in a circle on a geoboard or a computer


National Library of Virtual Manipulatives
Explore geometric properties of central angles and inscribed angles in a circle using a virtual geoboard.
( http://nlvm.usu.edu/en/nav/frames_asid_285_g_4_t_3.html?open=activities&from=category_g_4... )
Argyll Home Education Services Centre: This site was developed by Jim Reed.
Use the interactive activity to explore the pattern for inscribed angles subtended by the same arc. Then, watch the animation to check for understanding.
( http://argyll.epsb.ca/jreed/math20p/circles/inscribed_inscribed.htm )
Argyll Home Education Services Centre: This site was developed by Jim Reed.
Use the interactive activity to explore the relationship between a central angle and an inscribed angle. Then, watch the animation to check for understanding.
( http://argyll.epsb.ca/jreed/math20p/circles/inscribed_central.htm )
SE page 386
Explore geometric properties of perpendicular bisectors to a chord on a computer


Argyll Home Education Services Centre: This site was developed by Jim Reed.
Use the interactive activity to explore the pattern for perpendicular bisectors to a chord. Then, watch the animation to check for understanding.
( http://argyll.epsb.ca/jreed/math20p/circles/chordBisector.htm )
SE page 393
Information about sand mandalas


Cornell University
Provides information about sand mandalas and photos.
( http://www.graphics.cornell.edu/online/mandala/ )
SE page 394
Explore geometric properties of tangents to a circle on a computer


Argyll Home Education Services Centre: This site was developed by Jim Reed.
Use the interactive activities to explore the properties of tangents to a circle. Then, watch the animations to check for understanding.
( http://argyll.epsb.ca/jreed/math20p/circles/tangent.htm )







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