Hands on and engaging math centres for a Sea theme. These challenge cards have students make a variety of different 2D Sea creature shapes from pattern blocks that encourage visual discrimination skills as children rotate and flip smaller shapes to create the new shape.Focus shapes included - triangle, square, rectangle, rhombus/diamond, hexagon, trapezoid.I have added two sheets that explain the shape names. One with diamond and one with thin rhombus. You choose which one suits your needs of t