Instead of plotting points the normal way here is a variation
Educator may choose to replace the nails with tac's and the board with cardboard or other products like construction paper. The purpose is, as always, to let the students engage the material.
The same concepts may be used for more advanced plotting also
y = x
y= x^2 (hard to hold the string and take pictures while watching your 2-year-old :)
What else could you do?
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