Animal Record-Holders
Know four animal record-holders: the blue whale is the heaviest living animal, the cheetah is the fastest land animal, the giraffe is the tallest living animal, and the bee hummingbird is the smallest bird. Use approximate size comparisons carefully.
What a learner can do afterwards
- Names four animal record-holders and matches each to its record
- Uses a familiar size comparison while recognising that animals and objects vary
- Identifies the feature and group being compared, such as running speed among land animals
1 · Read
Animals live in different places around the world. Some hold records. A record compares one feature in a group. Fastest compares speed, tallest compares height, and heaviest compares body weight. Check the feature and the group.
The cheetah is the fastest land animal. Its top speed lasts only a short burst. It can slow down or tire. The record does not mean it always escapes.
Blue whales live in the ocean. The blue whale is the heaviest living animal. A very large adult can be about three full-size buses long, parked end to end. About means a rough match. Whale and bus lengths vary.
The giraffe is the tallest living animal. Some tall houses with several floors are taller than a giraffe. In a height chart, the tallest bar shows the tallest example.
Rounded example heights in metres. These are examples, not the height of every animal or person.
The bee hummingbird is the smallest bird. This compares birds, not all animals. A small bird in your garden need not hold that record. Height and body weight are different: a giraffe is tallest, but a blue whale is heaviest. By body weight, these three go from greatest to least: blue whale, giraffe, bee hummingbird.
Read these names from greatest body weight to least.
A model can use blocks to stand for toy buses. Count one block for each bus. To join two groups, count both groups together. Two blocks and two more blocks make four blocks. A model's stated length is exact for that model, not for every real whale.
To compare standing heights, measure from the ground to the top of each animal. Use the same unit for both measurements. Measuring only a neck leaves out the rest of the animal. Distance run tells you about movement, not standing height.
When two toys race for the same time, the toy that travels farther is faster over that whole race. In a distance chart, a taller bar shows more distance, not a taller or heavier toy.
Cheetah: fastest on land. Blue whale: heaviest living animal. Giraffe: tallest living animal. Bee hummingbird: smallest bird. Each record compares a feature within a group.
Lesson, questions and flashcards written for this dataset.
Readings written for this dataset.
More to read
Picturing a whale's length
How can you picture the length of a very large blue whale? Imagine three full-size buses parked end to end. The whale can be about that long. This is a rough comparison, not a measuring rule. Adult whales have different lengths. Buses do too. The blue whale's weight record and this length comparison describe different features.
Small animals feed a giant
Krill are small sea animals that look a little like shrimp. Blue whales eat them in large numbers. Some fish and penguins eat krill too. When less krill is available, these animals can have trouble finding enough food. An animal's small size does not tell us how many other animals depend on it for food.
Keeping the food, letting water out
A blue whale takes water and krill into its mouth. It pushes water out through plates called baleen. The baleen helps keep the krill inside so the whale can swallow them. Blue whales have baleen instead of teeth. Other kinds of whales have teeth, so this feeding method does not describe every whale.
2 · Watch
En anglaisTake it off screen
Where it sits
Learn first
This opens up
Nothing builds on it yet.
Where this leads
Jobs that lean on this skill. Follow one to see everything it is built on.
24 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.