Mrs. Poulin 2P
How we show numbers with manipulatives
What is Place Value?
Place value is understanding that the position of a number matters. For example, in the number 13 the 1 is in the tens position and the 3 is in the ones position. If we switch the 3 and the 1 then the number become 31!
Websites to help with place value understanding:
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http://www.abcya.com/interactive_100_number_chart.htm
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Using a hundred's chart can help students identify numbers and their value compared to other numbers.
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During math, we use tens rods, ones cubes and hundreds squares to show numbers (pictured above). The ones cubes represent the ones position in a number, the tens rods show the tens position, and the hundreds square represents the hundreds position.
How to help with this concept:
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Tell your student to draw the tens rods and ones cubes to help them picture the number
When comparing numbers, students have to look at the tens and ones position to decide which number is bigger or smaller.
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When we teach the symbols for greater than and less than to students we have them imagine a gator who likes to eat A LOT and the symbol is the gator's mouth. The mouth should always be facing the bigger number to eat it (examples in picture above).
Helping your child with this concept:
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Have them think about the gator and ask them which number would the gator want to eat more?
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Tell your child to look at the number in the tens position first to see which is larger than the ones position.
Websites for comparing numbers:
Students have to look at the numbers and tell us which number is in the tens and which is in the ones. In the picture above the 3 is in the tens position and the 2 is in the ones position.
Helping your child with this concept:
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Tell them to draw the ones cubes or tens rods
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Write tens above the number in the tens position and write ones above the number in the ones position (as in the picture above)
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Draw a line between down the middle of the number to help your child see the two positions.
Websites for identifying tens and ones:
Comparing Numbers: Greater than and Less Than
