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Column subtraction 5: Captivating Caribou

Further Challenges

Inspired by Nature Worksheet

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Further Challenges

  • Since the early 1970’s, Porcupine caribou have been counted by scientists every two or three years.This is done by photographing them from above when they are in large herds. Some of the caribou are equipped with radio collars so that the scientists can find the herds. Have a close look at the photograph below. How will you use your skills of number and estimation to calculate how many caribou feature in the arial photograph?

Aerial view shot of a herd of caribou.

  • Both male and female reindeer grow antlers, while in most other deer species, only the males have antlers. Compared to their body size, reindeer have the largest and heaviest antlers of all living deer species. Look closely at the reindeer antlers below. Can you use use your skills of geometry and angles to measure the different angles that are formed in this pair of reindeer antlers?


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Related Clip

Thouands of caribou stream from Alaska into Canada as they move north during their epic spring migration.

Credit: BBC One – Nature’s Epic Journeys

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