the name is created by Michael Jacobs who has many Yohakus,
for integers, decimals and directed numbers as well as fractions,
with multiplication as well as addition
2 by 2 up to 4 by 4 grids
and algebriac expression multiplication
these are simple but highly effective puzzles that involve practice of a variety of skills
the powerpoint suggests a way to tackle these particular fraction puzzles (Egyptian fractions)
(there might be more than one solution to some of these?)
