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2nd Grade Math

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by

Christy Howell

on 8 March 2017

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Transcript of 2nd Grade Math

2nd Grade Math
Understanding Math Expectations in Second Grade
Extend Understanding of the base ten system.

1. Students extend their understanding of the base ten system. This includes ideas of counting in fives, tens, and multiples of hundreds, tens, and ones, as well as number relationships involving these units, including comparing. Students understand multidigit numbers (up to 1000) written in base-ten notation, recognizing that the digits in each place represent amounts of thousands, hundreds, tens, or ones (e.g., 853 is 8 hundreds + 5 tens + 3 ones).
Base Ten Understanding and Application
Second graders in Carroll County spend fourteen plus weeks on building on Base Ten information from previous years and learning to apply the knowledge.
I can.....
I can use strategies to add and subtract numbers within 1000 and know when to regroup and borrow.
ex. a. 521 + ? = 781 b. 354 + 287 = ___
c. Jessica’s lemon tree has 526 lemons. She gave away 300 lemons. How many does she have left?

I can add and subtract 10 or 100 to any number from 100 to 900 in my head.
ex. a. 705 + 100 = 805
b. 273 + 60 = 333
Mathematical Practices
There are eight practices that are the goals of all math education, grades K-12.
1. Make sense of problems and
persevere in solving them.
2. Reason abstractly and
quantitatively.
3. Construct viable arguments and
critique the reasoning of others.
4. Model with mathematics.
5. Use appropriate tools strategically.
6. Attend to precision.
7. Look for and make use of structure.
8. Look for and express regularity in
repeated reasoning.
Critical Areas in 2nd Grade
(1) extending understanding of base ten notation;
(2) building fluency with addition and subtraction;
(3) using standard units of measure; and
(4) describing and analyzing shapes.
One priority standard in this unit is MGSE2.NBT.7
Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method.
Another priority standard in this unit is MGSE2.NBT.8.
Mentally add 10 or 100 to a given number 100–900, and mentally subtract 10 or 100 from a given number 100–900.
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