This is a 7th Grade Math Lesson on Adding & Subtracting Positive …
This is a 7th Grade Math Lesson on Adding & Subtracting Positive & Negative Integers. It is designed to be a 45-50 minute face-to-face lesson, however, some materials could be adapted for an online modality. Includes materials, and interactive activities for students to participate in.
This article talks about the origins of our number system and the …
This article talks about the origins of our number system and the important roles zero plays in it. The author informs the reader that the early number systems of the Egyptians, the Babylonians, the Romans and Greeks were developed for counting but not for calculations. Not until we had a base ten number system with place value and a symbol for zero did our number system become useful.
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