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Shared by an elementary school science teacher.

3.1 Scientific Investigation, Reasoning, and Logic

3.2 Simple Machines

3.3 Matter

3.4 Adaptations

3.5 Food Chains

3.6 Ecosystems

3.7 Soil

3.8 Cycles

3.9 Water Cycle

3.10 Natural Events and Human Influence

3.11 Sources of Energy