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# Mathematics Development (page 2)

By — Pearson Allyn Bacon Prentice Hall
Updated on May 1, 2014

### Seriation

Seriation is a mathematics concept that involves organizing or ordering things in a logical way. Consider toys that can be manipulated, such as different-sized stacking rings or blocks. Early in the use of these types of toys, children do not attend to the seriated relationship, of which ring or block goes on first. Over a period of time, however, the child will try to put the largest item on the bottom, as the rings are seriated by size. Exploring and discovering this seriated set of rings is important for logical mathematical thinking. In addition, these types of investigations are interesting, engaging, and motivational.

Other types of seriated toys and tools include cookie cutters in different sizes and pie plates in varying diameters. These toys can be explored for seriation of their nesting attributes. Such explorations can prompt children to tell stories relating to the seriated sizes of the toys, with encouragement from teachers. For example, a young child playing at a play-doh center with a seriated set of bunny cookie-cutter shapes could be asked about the “baby bunny” and the “mommy bunny,” and eventually she might tell a story about them. Children’s self-directed play often develops and utilizes seriation skills. Seriation becomes more natural as children enter school as kindergarteners and continues to become more sophisticated through the primary grades.

### Spatial Relationships

Another important concept developed in mathematics is spatial relationships. The games and interactions that comprise play in infancy also help babies become aware of their body parts and develop a sense of their physical self. Such exploration helps them to know where they are in relation to their world. As toddlers become more skilled with moving about their world, a concept called navigation, they experience spatial relationships firsthand. They navigate themselves through a play tunnel or space fort, they begin to climb on play structures and equipment. These experiences will be the foundation for more mathematics concepts to follow involving directionality and position in space, such as the concepts of up, down, over, next to, under, above, beside, in between, first, and last.

### Object Permanence

Babies can discover the important concept of object permanence in a simple game of peek-a-boo. For very young babies, this is a fun game because it elicits an element of surprise when someone appears and then disappears. Learning that the person or object does not actually disappear is a major accomplishment for a little one. Such a discovery is important for the mathematics concepts that will follow. Once babies know, by about 9 months of age (Piaget, 1963), that something is still there even when it is hidden, they will begin to be more observant and notice similarities and differences among the objects themselves. Such observations and experiences of objects lead to sorting and classifying. Piaget explains that knowledge arises neither from objects nor the child, but from interactions between the child and those objects.

### Sorting

Sorting occurs when things with like attributes are grouped together. As Poole (1998) reports, if you give an 18-month-old five blocks and one ball, the child will handle and examine the ball (the different object) for a longer time than the blocks. This activity suggests that the child feels the difference between the blocks and the ball and wants to explore the different one longer to make sense of the difference. As such, the concept and process of sorting begins to be evident. When young children put the blocks in the block corner, the books on the book shelf, their socks in the big box, or the toy animals in the wooden barn, they are sorting.

Toddlers are likely to group similar objects together quite easily, whereas seriating or sequencing objects by a specific characteristic is more difficult. For example, if you give 4-year-olds a group of stuffed teddy bears and ask them to arrange them by size, they will focus on the big bears and the little bears without considering the seriation or the ordering by size.

### Comparing

When toddlers sort items and put them into two groups, such as the big teddy bears and the little teddy bears, they are demonstrating the concept of comparing. In comparing, children identify and examine specific properties of different objects or ideas and then make judgments about how they are similar and how they are different. Comparing causes a person to look at details and specifics instead of generalities, to observe and study more carefully. Noting that some things are big and some things are little requires a judgment about attributes or qualities of things.

Having children make comparisons is valuable because it requires them to actively make observations related to specific items. They must look for divergent ideas, to go beyond the obvious. Beginning activities that involve comparing tend to be of objects common to the children’s environment. They can compare cars and trucks, dogs and cats, apples and oranges, or cookies and crackers. These activities are important for children in that they promote the use of the five senses.

After a child has developed and used the skill of comparing concrete objects, teachers can extend this to comparing ideas. Children can compare sunrises and sunsets, seasons, a pumpkin and an apple, a carrot and cucumber, story lines from Eric Carle books, or songs and poetry. Charting their ideas about the similarities and differences of two things or events is helpful in developing expressive language.