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Britannica School
General reference resource for multiple age groups.
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Gale In Context: Elementary
Formerly Kids InfoBits A general reference resource for primary and elementary.
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Newsomatic
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PK Life Science
Inspires elementary and middle school learners about key life science topics including animals; classification; endangered and extinct species; food chains and food webs; green living; habitats and ecosystems; the human body; life cycles; plants; and survival and adaptation.