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UNIT 2The Earth and Its History
UNIT 3Prehistoric Plants and Animals
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algae amphibians Ask the children atoms body boiling burning called calories candle carbon dioxide chemical change chemical energy children read pages children understand classroom color developed digestion dinosaurs discussion dry cell earth ergy experiment fish form of energy fossils fuel galaxy gases glass green plants heat energy Help the children igneous rocks inches Key Science Words kinds of food kinetic energy layers light energy light travels light-year liquid living things look magma mammals Materials Needed measure distance ment Metamorphic rocks metric system miles milk millions minerals move outer space oxidation oxygen particles physical change plants and animals potential energy prehistoric Procedure proteins Proxima Centauri pupils read reptiles scientists sediment sedimentary rocks soil solar solid stars steam substance sugar surface tance teacher tell temperature tion trilobite unit of measurement vitamins water vapor weight