Playing gladiators – Ancient Rome project
Gladiators mosaic First read the account of a day at the games on the page about Roman gladiators. Then, how about putting together a play showing the events of the [...]
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06, 2017
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05, 2017
Haploid and diploid cells – Plant reproduction
Human sperm cells with flagella (under a microscope) - They're haploid cells. When a cell divides by meiosis, it ends up with only half the amount of DNA it had before. [...]
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05, 2017
What is a hydra? Animal Biology and Evolution
Hydra evolution: a hydra budding new hydras Before the hydra For almost three billion years, the only living things on earth were one-celled creatures, either prokaryotes or eukaryotes. What's a prokaryote? And [...]
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05, 2017
What are roundworms? Nematodes, evolution, and biology
Nematodes, also called roundworms, in a jar Evolution of roundworms Roundworms, or nematodes, probably evolved from the earlier flatworms about 548 million years ago. Like all other living things at [...]
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05, 2017
What are turtles? Biology and Evolution
Evolution of turtles: Seychelles tortoise (Jardin des Plantes, Paris) Evolution of turtles The first turtles began to evolve from earlier reptiles about 225 million years ago, during the Triassic period. [...]
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05, 2017
Chimpanzee Evolution and Biology
What is a chimpanzee? Chimpanzees evolved in the Tertiary period, about five million years ago, when they split off from earlier primates in Africa. When did chimpanzees evolve? Chimpanzees are [...]
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05, 2017
Bird Feathers – a bird project – Biology
Bird feathers have many tiny barbs Observing bird feathers You can see how bird feathers work for yourself. First, go to a park or a place where there are pigeons [...]
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05, 2017
Why do bees make honey?
Bees evolve from flies The history of bees: Bees evolved from earlier flies and dragonflies about 200 million years ago, during the Jurassic period. More about flies The Jurassic period All our [...]
