Chapter 8 concepts https://ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https%253A%252F%252Flms.mheducation.com%252Fmghmiddleware%252Fmheproducts%252FlmsCloseWindow.htm#/activity Chapter 9 concepts https://newconnect.mheducation.com/