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Ages: 8 - 12
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Addition Properties- Commutative, Zero and Associative Properties
From eduplace.com, produced by Houghton Mifflin
Students will learn to use the properties of addition to make addition easier.  The associative property says that addends can be grouped in any order.  Changing the order that numbers are added does not change the sum.  The sum of zero plus a number... [more]
Found by tinag1974 in 1.OA.C.6
May 20, 2010 at 03:58 PM
Not Right For WatchKnowLearn
Ages: 8 - 12
9002 Views:
Addition Properties- Commutative, Zero and Associative Properties
From eduplace.com, produced by Houghton Mifflin
Students will learn to use the properties of addition to make addition easier.  The associative property says that addends can be grouped in any order.  Changing the order that numbers are added does not change the sum.  The sum of zero plus a number... [more]
Found by tinag1974 in 1.OA.B.3
May 20, 2010 at 03:58 PM
Not Right For WatchKnowLearn
Ages: 5 - 8
3810 Views:
Adding a 1-Digit Number to a 2-Digit Number
From eduplace.com, produced by Houghton Mifflin
Using tens and ones blocks to model the numbers, students will add a 1-digit number to a 2-digit number.  Begin by adding the ones together, then the tens.  The user clicks through the slides.
Found by tinag1974 in 1.NBT.C.4
May 20, 2010 at 02:03 PM
Not Right For WatchKnowLearn
Ages: 5 - 8
3810 Views:
Adding a 1-Digit Number to a 2-Digit Number
From eduplace.com, produced by Houghton Mifflin
Using tens and ones blocks to model the numbers, students will add a 1-digit number to a 2-digit number.  Begin by adding the ones together, then the tens.  The user clicks through the slides.
Found by tinag1974 in 1.NBT.B.2c
May 20, 2010 at 02:03 PM
Not Right For WatchKnowLearn
Ages: 4 - 7
4001 Views:
Addition With Manipulatives
From eduplace.com, produced by Houghton Mifflin
Using counters, animated counters are grouped in sets. Students count the objects to see how many there are in all.  6 + 3 =9. The user clicks through the slides. Only one problem demonstrated.
Found by tinag1974 in 1.OA.A.1
May 14, 2010 at 01:00 PM
Not Right For WatchKnowLearn
Ages: 7 - 12
10428 Views:
Relate Addition and Subtraction - by StudyJams
From scholastic.com, produced by Scholastic
Inverse operations are pairs of mathematical operations, like addition and subtraction, that can undo eachother.  You can learn how to do it by using fact families. This cartoon animation from StudyJams also includes a short, self-checking quiz.
Found by begamatt in 1.OA.C.6
June 18, 2011 at 10:26 PM
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