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and cells in perspective
Help your children understand and learn to read the evolutionary tree diagrams they will encounter in their life science studies
102 text cards for children
but no organisms that are not its descendants
Help your children explore the diversity of life with this 206-page book
Elements in Action History of Life and cells in perspectiveMake atom studies more interesting and applicable with these chemical element group cards and matching cards with the names and symbols. Working with these plastic element name and symbol cards will strengthen understanding and recall of 50 elements grouped according to their shared characteristics. The groups include chemical groups such as alkali metals and halogens, and functional groups such as elements of the atmosphere and elements of living