If you experience technical difficulties using Learning A-Z, we encourage you to visit the Learning A-Z browser check page to make sure that your system meets the necessary requirements. You might also try clearing your browser's cache. Or, if you are using Safari, try switching to another browser such as Firefox or Google Chrome.
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All Learning A-Z websites are compatible with most computers connected to a working printer, the internet, and have a PDF reader program such as Adobe Reader installed.