Science

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Natural Resources

 * Earth's Structure
 * Formation of Natural Resources

Powders and Crystals

 * Properties of Matter
 * Matter and Liquids
 * Acids and Bases
 * Heat and Matter
 * Experimental Design

Simple Machines

 * Force and Motion
 * Work
 * Magnetic Force
 * Force of Gravity
 * Force of Friction
 * Simple Machines
 * Lever
 * Pulley
 * Wheel and Axle
 * Inclined Plane

Light

 * Electromagnetic Spectrum
 * Properties of Light
 * Lenses and their Uses
 * Color
 * Pigments

Cells/DNA

 * Parts and Functions of a Microscope
 * Parts and Functions of Plant and Animal Cells
 * Chromosomes
 * Genes
 * Inherited Traits
 * DNA
 * Punnet Squares

Plant Responses

 * Plant Structure and Function
 * Plant Growth
 * Plant Tropisms
 * Environmental Responses to Plants

Image: '[|Graduated Cylinders]' www.flickr.com/photos/27304596@N00/583749159