Date: Thu, 3 Apr 1997 23:31:13 -0500
From: Alexander Bogomolny
Jerry:
* is the plain multiplication. The thing that looks as the check mark is the square root. Sorry if that's not clear. Just in case, [] means "the whole part", i.e., the largest integers that does not exceed a given number.
You may want to look into
From Arithmetic and Algebra:
- Three glass puzzle
- Hour glass timing
- Selfreference
- Mathematical proof
- Breaking Chocolate Bars
From Geometry
- Moebius strip is funtastic for kids
- Cycloids is a drawing fun
- Shapes of Constant Width
- Indexing of Julia Sets
Among Games (activity not theory):
- Fif
- Sending scouts into desert
- Peg Solitaire
- Magic Squares
- Nim
Other puzzles may also be entertaing for a 7 year old. Mind you math is not just counting.
Time permitting, tell me if they like anything particularly.
Alex
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