08 December 2006

past present

a great craft with older children

Remember icosahedron ornaments from grade school? I save cards from birthdays and other celebrations (and from interesting packaging) to make these and now Bruno enjoys revisiting the year as he chooses images for an ornament. Here are MS Living's directions. And here's my tip: to form the equilateral triangle template, mark the extra cardstock circle like a clock face by placing a dot at 12 o'clock, 3 o'clock, 6 o'clock, and 9 o'clock and then marking the spots where the numbers in between should go. Draw lines from 12 o'clock to 4 o'clock, from 4 o'clock to 8 o'clock, and from 8 o'clock to 12 o'clock and cut. Older children using compasses and protractors could make their triangles even more precise.

PS Coooooool. I asked my husband how to inscribe an equilateral triangle in a circle using Euclidean geometry and he found this site.

Do I count as an older children? These are so cool--I wish I'd been saving up cards for this.
"Please note that all of the platonic solids can be made in this manner."

Just saying.

Saving all my cards this year. xox Kay
High school geometry flashback!
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