So many of the same thing - proportional reasoning in elementary math
Students can start learning proportional reasoning in 4th grade (or earlier) with the help of ratio tables. I don't call them that in this video though, but that's what we are doing: first filling in these tables that show values for two quantities that vary proportionally, and then later using these tables to help us solve word problems. I don't use this type of language in the actual lesson though, so as to not confuse the students. The idea is very simple and accessible to anyone!
If you cannot see the video above, click here for an alternative video player.
See also
Two-digit multiplication and why we add a zero on the 2nd line
Math Mammoth Grade 4 curriculum
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