I've just found that I keep coming
across the number $28$.
Next Year's calendar for
then there's my set of $28$ dominoes:
So, why don't you explore this number? Find $28$ flat shapes the
same and put them together in some way.
Here are some I found using circular discs, octagons, hexagons,
triangles and pentagons.
You may like to try $28$ cubes and
get something like this:
or put together to make a
caterpillar with changes at the ends.
Let us know what you come up with
and what you notice.