教孩子颜色和形状的纸卡。纸板正方形、 三角形、 长方形、 圈附近由相应的色卡。木制的背景。顶视图 Paper cards to teach children colour and shape. Cardboard square, triangle, rectangle and circle near by corresponding color cards. Enhancing kids cognitive development. Kids early learning concept. Association skills. Wooden background. Top view