PPT
McGraw Hill

Mc Graw Hill: The Additive Inverse Property

For Students 9th - 10th
The sum of any number and its additive inverse is always a zero. This site gives you the rule for this property.
PPT
Math Science Nucleus

Math/science Nucleus: Electrons and the Hairy Monster

For Students 1st - 5th
This animation discusses electrons and the properties of electrons in a storybook format featuring hairy monsters, strange rocks, and fun animations.

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