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# Think Green Math

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• nature and the environment illustration
• nature and the environment illustration
• nature and the environment illustration
• nature and the environment illustration
• nature and the environment
• A board size bar graph and set of tally charts measuring the participation of classes in environmental projects.
• This is not only a great way to recycle old greeting cards but can also be used as a mathematical challenge.
• A large bar graph charting a recycling project, with tally charts.
• Use a line graph to determine the number of trees planted on Arbor Day.
• Use a bar graph to determine the types of trees planted on Arbor Day.
• A board size bar graph and set of tally charts measuring the species of trees planted in a project.
• Three pages of bar graphs on Think Green topics. Students identify the tally chart that correctly reflects each graph. Answer sheet.
• "We know that, on average, each tree absorbs from 13 to 48 pounds of carbon dioxide per year. We have planted 15 trees. How much carbon dioxide absorption will the trees we’ve already planted enable in the next 50 years?" Five math problems with an environmental theme.
• "It takes 55% less water to make recycled paper than normal paper... How much water would the same factory use to make the same amount of normal paper?" Five word problems with an environmental theme.
• Use this simple bar graph to determine how many trash items (categorized by type) were picked up.