Students - Introduction to Starfish - YouTube.
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea.Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. About 1,500 species of starfish occur on the seabed in all the world's oceans, from the tropics to frigid polar waters.
Most people commonly associate the starfish with having five arms. However, there are many species of starfish that have 3, 4, 6, 7, and 8 arms. Each arm that extends out of the “body” is covered on the bottom by many tube-like feet. These feet help convey the starfish but taking water in and the pumping it out, therefore enabling it to move.
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Step 1: Show the class the book Starfish: The Stars of the Sea. Ask them to share what they already know about starfish. Step 2: Invite students to look at the cover illustration. Ask them to notice the different starfish. Have they ever seen any of these types of starfish before? Ask students to describe their differences and similarities.
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We work with law enforcement officers to identify people who need a hand up. We then match those needs with volunteers who can donate a few minutes or hours of their time to make a connection and make a difference.