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Data, Probability, and Decision Making · Term 3

Measures of Central Tendency

Students will calculate and interpret mean, median, and mode for various data sets.

Key Questions

  1. Compare the utility of mean, median, and mode in describing the 'center' of a data set.
  2. Analyze how outliers affect the mean versus the median of a data set.
  3. Justify which measure of central tendency is most appropriate for a given data distribution.

Ontario Curriculum Expectations

CCSS.MATH.CONTENT.6.SP.A.2CCSS.MATH.CONTENT.HSS.ID.A.2
Grade: Grade 9
Subject: Mathematics
Unit: Data, Probability, and Decision Making
Period: Term 3

About This Topic

Mitigation and Adaptation Strategies focuses on how we respond to the climate crisis. Students move from understanding the science of warming to evaluating the solutions. Mitigation involves reducing the 'cause' (e.g., carbon tax, renewable energy, reforestation), while adaptation involves managing the 'effect' (e.g., building sea walls, developing drought-resistant crops, or urban cooling). This topic is the 'action' phase of the Grade 9 curriculum.

In Ontario, this includes looking at provincial policies, municipal 'green' initiatives, and the role of individual and corporate responsibility. It also highlights the leadership of Indigenous communities in land protection and sustainable harvesting. This topic is best taught through collaborative problem-solving and mock trials, where students must weigh the economic costs of action against the long-term environmental costs of inaction. It encourages them to think as citizens and innovators.

Active Learning Ideas

Watch Out for These Misconceptions

Common MisconceptionWe have to choose between the economy and the environment.

What to Teach Instead

Students often see this as a 'zero-sum' game. Using a collaborative investigation into 'green jobs' and the costs of climate disasters (like wildfires or floods) helps them see that climate action is actually a form of economic protection.

Common MisconceptionAdaptation means we've given up on stopping climate change.

What to Teach Instead

Students may think adaptation is 'defeat.' A structured discussion can clarify that because some warming is already 'locked in,' we must do both: mitigate to prevent the worst-case scenario and adapt to survive the changes already happening.

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Frequently Asked Questions

What is the difference between mitigation and adaptation?
Mitigation is 'preventing the fire' (reducing emissions), while adaptation is 'wearing a fire suit' (living with the changes). In Ontario, mitigation might look like phasing out coal power, while adaptation looks like upgrading our storm sewers to handle bigger floods.
How can individuals make a difference in climate change?
While systemic change is key, individual actions like reducing meat consumption, using transit, and voting for climate-conscious policies create the social pressure needed for larger shifts. In class, students can calculate the 'collective impact' of their whole school making one small change.
How can active learning help students understand climate solutions?
Climate solutions are complex and involve many stakeholders. Active learning strategies like mock trials or 'Sponge City' challenges force students to step into different shoes. This builds empathy and a deeper understanding of why these policies are often debated, helping them move past simple 'good vs. bad' narratives to see the real-world nuances of policy-making.
What is carbon sequestration?
It's the process of capturing and storing atmospheric carbon dioxide. It can be natural (planting trees) or technological (pumping CO2 underground). Students can research Ontario's 'Ring of Fire' or boreal forests to see how our geography plays a role in this.

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