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===Note for Teachers===
By KS3 many students identify insects as not '''animals'''. It is important to make sure that students understand that there are many more animal types than just amphibian, bird, fish, mammal and reptile.
==Key Stage 2==
===Meaning===
An '''animal''' is an [[organism]] that can [[move]] around freely and eats other [[organism]]s to survive.
===About Animals===
: There are many different types of '''animals'''.
: Animals can be split into two main groups; [[Vertebrate]]s and [[Invertebrate]]s.
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==Key Stage 3==
'''[[animal|Animals]]''' are made of [[cell (biological)|cells]] which contain a [[nucleus]], [[cytoplasm]], [[mitochondria]] and a [[cell membrane]], but no [[chloroplasts]], [[cell wall]] or [[permanent vacuole]].