Baby’s first abacus, and a more professional one
The five and two pattern of the lower one marks it as a more Chinese-style suanpan.Photo by Blue Moon.
math
The Count Counts
Counting is wonderful,Counting is marvelous,Counting’s the best thing to do. Counting is happiness,Counting is ecstasy,I love to count, don’t you? Photo by Crown City.
Crayola Calculator
Love it! Photo by Family Transitions.
Space Scientist Drafting Set for the Engineers of the Future
Photo by Estate Liquidation Services.
Hex keyboard
Let’s stick with the antiquated computing theme. And the same auction as yesterday’s entry. I don’t know what this thing is, but the most notable… Read More »Hex keyboard
Fractals in my pocket
OK, this inaugurates a new tag that is sort of a sequel to the want tag: bought! Found this at an estate sale walking distance… Read More »Fractals in my pocket