G1601 雙面釘板5*5
8 Boards, 200 colorful rubber bands and a guide per set With these geoboards and rubber bands kids can explore,
compare similarities and differences of shape and size; count and work with symmetry, congruence, perimeter, are, fractions ans angles.
This geoboards is made of durable polyproylene.
one side has 5x5 pin array, th other side has a 12 pin circular arrangement.