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Native American games – lacrosse, swimming, dice

By |2018-04-11T18:30:20+00:00August 8th, 2017|Games, Native American|

Cherokee lacrosse players from 1888 People who lived in North America played both active games and the kind where you can sit down. Their favorite active game was lacrosse. Or actually lacrosse and a lot of other games that you play with a stick and a ball, with rules that were different in different parts [...]

Playing an Inuit game with seal bones

By |2018-04-20T22:33:17+00:00August 8th, 2017|Games, Modern Europe|

This is a variation on a traditional Inuit game. Print out the outline of the seal flipper bones and cut on the lines to get each bone separate from the others. Make a set of bones for each player. Now mix up all the bones and put them in a bag. Each player draws five [...]

Calcium project – Chalk and lemon juice – Chemistry

By |2018-04-16T17:38:03+00:00June 1st, 2017|Chemistry|

Need chalk? Buy chalk Take a piece of regular white chalk, like for writing on a blackboard. Make sure the chalk is calcium carbonate like the kind in the picture and not made of plaster of paris. Drop the chalk in a cup of vinegar or lemon juice. Vinegar is made of water [...]

Vertebrae – Skeletons, Evolution, and Biology

By |2017-05-28T00:52:16+00:00May 28th, 2017|Biology|

Fish vertebrae Fish were the first animals to have vertebrae, about 510 million years ago. Vertebrae are tiny O-shaped bones that go around the fish's spinal cord and protect it so it won't get broken. Because there are lots of tiny vertebrae, the fish can protect its spinal cord and still be able [...]

Reptile and Mammal Skeletons – Evolution and Biology

By |2018-04-16T09:09:50+00:00May 28th, 2017|Biology|

Evolution of skeletons: Skeleton of a dinosaur Evolution of skeletons From frogs, there evolved reptiles like crocodiles and dinosaurs. Some of these reptiles lived mostly or entirely on land, so they needed stronger bones that could hold them up when they weren't in the water. And most reptiles ate meat, so, like fish, [...]

Evolution of bones – Skeletons and Biology

By |2017-05-28T00:44:16+00:00May 28th, 2017|Biology|

A fish skeleton One-celled animals don't have any support system that holds them in a certain shape. Plants do have a support system, but it's the cellulose in the cell wall of each cell, rather than bones. Early multi-celled animals like jellyfish and sponges and worms also didn't have skeletons, but beginning with [...]

Why do we have fingers? Skeletons, Evolution, and Biology

By |2017-05-28T00:38:23+00:00May 28th, 2017|Biology|

Human hand bones The first fingers and toes evolved from earlier fish fins about 400 million years ago. During the Devonian period, the oceans were very shallow, and some fish evolved to be able to push themselves out of the water to breathe the air. For this, they needed stronger fins that they [...]

Vertebrae project – Boiling fish and chicken – Biology

By |2018-04-12T00:14:42+00:00May 28th, 2017|Biology|

Vertebrae project: check out fish and chicken vertebrae You can easily see vertebrae for yourself if you buy a whole trout (with the bones in) at the grocery store and cook it. If the grocery store doesn't have any fish with the bones in, ask the fish man and he will probably get [...]