March 11, 2009
by John
4 Comments
Today Siena turns 2.6! That number, by the way, is base 12, so the number after the decimal is not 6/10ths but 6/12ths, or one-half. I first heard the base 12 form for age used at day care, when they … Continue reading
February 10, 2009
by John
1 Comment
Siena is a real counting champ now. Given a set of similar objects, she can pretty reliably determine the cardinality of the set, up to 10 or so. We’ve also been working on getting to 20, but there are some … Continue reading