the latest emphasis here in the US is on the use of fraction strips for comparing magnitudes and ordering fractions on the number line–as if that is the primary source of the problem, but I remain unconvinced. ]]>

I must try harder. ]]>

y = -p. Then I could place 2 points on the parabola: (2p,p) and (-2p, p) this would give me 3 definite points on the parabola. I would sketch the parabola through the 3 points. I was limited to showing only + and – parabolas that we’re symmetric to the x or y axis.

I look forward to playing around with your approach! I haven’t posted anything on my website for years!

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