# Rectangles with Changing Dimensions in Width and Height

Matching and sorting are important skills that children need to master for learning math in the future. Matching and sorting skills also help cognitive development. Matching is the identification of similar objects according to their common properties. Sorting is to separate objects into specific orders according to their particular features. Children should master certain skills such as matching by shapes, sizes, and colors.

This worksheet provides an exercise for hands-on matching and sorting skills. It will attract kids older than two and half years old. It has four groups of rectangles with varying height and width, and filled with different colors. The first group contains rectangles decreasing in width, but having the same height. The second group contains rectangles decreasing in both height and width, and so that they are either larger or smaller, but always of the same shape. In the third group, the rectangles have the same width but decreasing height. The last group of rectangles vary in both dimensions, decreasing in width and increasing in height.

Parents could cut out the rectangles in each group, mix them, and ask kids to fill the rectangles into their original positions. Or you may ask kids to put the rectangles into the corresponding outlines in the second page of the worksheet. Through this exercise, kids would end by being able to arrange the rectangles quickly in their right places. This means that kids educate their eyes to distinguish at a glance the differences in dimensions; and they train their little hands to perform movements with precision and accuracy.

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