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Infant Toddler Learning & Development Foundations

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COGNITIVE DEVELOPMENT<br />

76<br />

Number Sense<br />

Behaviors leading up to the<br />

foundation (4 to 7 months)<br />

During this period, the child may:<br />

• Explore toys with hands and<br />

mouth. (3–6 mos.; Parks 2004,<br />

10)<br />

• Reach for second toy but may<br />

not grasp it when already holding<br />

one toy in the other hand.<br />

(5–6.5 mos.; Parks 2004, 49;<br />

scaled score of 10 for 5:16–<br />

6:15 mos.; Bayley 2006, 55)<br />

• Transfer a toy from one hand<br />

to the other. (5.5–7 mos.; Parks<br />

2004)<br />

• Reach for, grasp, and hold<br />

onto a toy with one hand when<br />

already holding a different<br />

toy in the other hand. (Scaled<br />

score of 10 for 6:16–7:15 mos.;<br />

Bayley 2006, 56)<br />

• Track visually the path of a<br />

moving object. (6–8 mos.;<br />

Parks 2004, 64)<br />

Behaviors leading up to the<br />

foundation (9 to 17 months)<br />

During this period, the child may:<br />

• Try to hold onto two toys with<br />

one hand while reaching for a<br />

third desired toy, even if not<br />

successful. (Scaled score of 9<br />

for 10:16–11:15 mos.; Bayley<br />

2006, 58; 8–10 mos.; Parks<br />

2004, 50)<br />

• Hold a block in each hand and<br />

bang them together. (8.5–12<br />

mos.; Parks 2004)<br />

• Put several pegs into a plastic<br />

container and then dump them<br />

into a pile. (12–13 mos.; Parks<br />

2004, 65)<br />

Behaviors leading up to the<br />

foundation (19 to 35 months)<br />

During this period, the child may:<br />

• Get two cups from the cupboard<br />

when playing in the housekeeping<br />

area with a friend. (21 mos.;<br />

Mix, Huttenlocher, and Levine<br />

2002)<br />

• Look at or point to the child<br />

with one piece of apple left on<br />

his napkin when the infant care<br />

teacher asks, “Who has just one<br />

piece of apple?” (24–30 mos.;<br />

Parks 2004, 74)<br />

• Give the infant care teacher one<br />

cracker from a pile of many when<br />

she asks for “one.” (25–30 mos.;<br />

Parks 2004; scaled score of 10<br />

for 28:16–30:15 mos.; Bayley<br />

2006, 73)

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