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[Grade 4 Chapter 1 Math World]

Addition and Subtraction Around the World

Internet Links

Following are links to Internet resources that can be used to support instruction of the Math World feature for this chapter.

thai-language.com
Thai characters and numerals can be seen and heard at this site. You can also find an online dictionary. This is a good Internet resource for the Thai language.
http://www.thai-language.com/Default.asp

History of Zero
Here you can find out about the development of the concept of zero, and the history of its written forms.
http://www-groups.dcs.st-andrews.ac.uk/~history/HistTopics/Zero.html


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