review-of-adding-integers-counters-number-line-different-signs-rules

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Interactive video lesson plan for: Review of adding integers: counters, number line, different signs, rules

Activity overview:

A review lesson on integer addition for pre-algebra or 7th grade math. I briefly show the basics of the concept using counters and number line.

Then we solve sums with more than two integers to add, starting with additions of several negative integers, and then proceeding to sums that include several negative and positive integers. The basic idea is to first add all the negatives and all the positives separately, and lastly add those two sums.

I also explain the common rules for integer addition. When the two integers have different signs, you subtract their absolute values, then check which "side wins" so to speak (which integer has larger absolute value), and the sum has the same sign as that integer.

Tengo una versión español de este video que se halla en https://www.youtube.com/watch?v=q2Sv6PfEWFI

If you like the video, subscribe to my channel. :) Thanks in advance!

Learn more pre-algebra with Math Mammoth Grade 7 Curriculum at http://www.mathmammoth.com/complete/grade_7.php - available as an instant download and as printed copies. Check out the free samples also!

Tagged under: Integer,Mathematics (Field Of Study),Number Line,pre-algebra,Algebra (Field Of Study),Review,integer addition,adding integers,7th grade,sum,sign,negative,positive

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