1.OA.C.6

Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

There are 18 videos in this category and 0 videos in 0 subcategories.

Category Videos
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Ages: 5 - 11
10854 Views:
Using Fact Families in Addition and Subtraction
From eduplace.com, produced by Houghton Mifflin
Addition and subtraction facts that use the same numbers are related. 6+5 =11 and 11 - 5 = 6 are related facts.  Use related facts to solve problems. User clicks through the slides.
Found by tinag1974 in 1.OA.C.6
May 14, 2010 at 02:04 PM
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Not Right For WatchKnowLearn
Ages: 7 - 12
7924 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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Not Right For WatchKnowLearn
Ages: 8 - 14
6683 Views:
Diffy - Virtual Manipulative
From usu.edu, produced by Utah State University
When Diffy opens, there are four black numbers placed at the corners of a black square. Your first goal is to fill in the four blanks in the blue circles in the middle of each side of the black square. Start with any side of the black square and cli... [more]
May 9, 2010 at 11:11 AM
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Not Right For WatchKnowLearn
Ages: 8 - 12
7301 Views:
Multiplication Strategies - Skip Counting, Draw a Picture, Draw an Array, Write a Sentence
From eduplace.com, produced by Houghton Mifflin
Students will learn different strategies to determine the product of a multiplication problem.  Skip counting on a number line, drawing a picture, drawing an array and writing a multiplication sentence are different strategies for finding the product... [more]
Found by tinag1974 in 1.OA.C.6
May 20, 2010 at 04:12 PM
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Not Right For WatchKnowLearn
Ages: 4 - 7
7344 Views:
Fact Families
From eduplace.com, produced by Houghton Mifflin
Students learn to write fact family problems. Fact families all use the same number.  Using a whole, part, part mat, students use cube trains to write two different addition problems using the same numbers- 2, 8 and 10 (2+8=10, 8+2=10).  For the subt... [more]
Found by tinag1974 in 1.OA.C.6
May 14, 2010 at 01:29 PM
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Not Right For WatchKnowLearn
Ages: 8 - 12
6760 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.C.6
May 20, 2010 at 03:58 PM
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Not Right For WatchKnowLearn
Ages: 5 - 11
7654 Views:
Using Related Facts to Make a Fact Family
From eduplace.com, produced by Houghton Mifflin
A fact family uses the same three numbers to make addition and subtraction problems such as 7+2=9, 2+7=9, 9-2=7, 9-7=2.
Found by tinag1974 in 1.OA.C.6
May 20, 2010 at 01:59 PM
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Not Right For WatchKnowLearn
Ages: 6 - 9
2400 Views:
Use Fact Families to Subtract Through
From eduplace.com, produced by Houghton Mifflin
Using knowledge of addition facts, students will learn how to use related facts or fact families to solve the problem.  Related facts or fact families, use the same 3 numbers. User clicks through the slides.
Found by tinag1974 in 1.OA.C.6
May 20, 2010 at 02:15 PM
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Not Right For WatchKnowLearn
Ages: 18 - 18
7622 Views:
Teach Students Math with the Arithmetic Game
From YouTube, produced by Expert Village
Learn how to play and teach this great game for practicing arithmetic with an expert teaching tips in this kids math games video clip.  This game can be played for practicing addition, subtraction, multiplication, or division skills.  This is a fun g... [more]
Found by ronna_37 in 1.OA.C.6
March 3, 2010 at 10:30 PM
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Not Right For WatchKnowLearn
Ages: 5 - 8
4207 Views:
Addition Strategy - Adding Three One-Digit Numbers
From eduplace.com, produced by Houghton Mifflin
Students learn to add three one-digit numbers. Numbers can be added in any order.  Look for an addition fact that you know, then add.
Found by tinag1974 in 1.OA.C.6
May 14, 2010 at 01:58 PM
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