<div dir="ltr">Jon, he's learning to calculate areas and perimeters of shapes made of squares and squares divided along their diagonals.  I can help but think of Stokes' Theorem.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Apr 22, 2021 at 2:44 PM jon zingale <<a href="mailto:jonzingale@gmail.com">jonzingale@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Wait till you get to calculus. Math works that way, you know. Levels.<br>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr">Frank Wimberly<br>140 Calle Ojo Feliz<br>Santa Fe, NM 87505<br>505 670-9918<div><br></div><div>Research:  <a href="https://www.researchgate.net/profile/Frank_Wimberly2" target="_blank">https://www.researchgate.net/profile/Frank_Wimberly2</a></div></div></div>