1.OA.A.1

Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions (e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.)

There are 29 videos in this category and 59 videos in 28 subcategories.

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Not Right For WatchKnowLearn
Ages: 3 - 7
7868 Views:
Simple Subtraction From 4 Song "Elmo Has 4 Ducks" - Sesame Street
From YouTube, produced by Sesame Street.org
In this video snippet from "Sesame Street", Elmo sings about his 4 ducks. During each verse of the song, one duck at a time leaves, allowing the viewer to tell how many ducks are left. This would be a great song for introducing subtraction to very yo... [more]
Found by CKR11 in 1.OA.A.1
July 25, 2009 at 10:59 AM
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Not Right For WatchKnowLearn
Ages: 3 - 8
6874 Views:
5 Red Apples
From WatchKnow
A song about 5 red apples in a tree.  The song is similar to 5 little monkeys and introduces the idea of subtraction. Run time 01:47.
September 24, 2010 at 04:23 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.A.1
May 14, 2010 at 01:29 PM
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Not Right For WatchKnowLearn
Ages: 3 - 7
4512 Views:
Minus 1 Subtraction Facts Presented by Sesame Street
From YouTube, produced by Sesame Street
A cartoon peacock demonstrates subtraction when he loses tail feathers. He begins with 5 feathers and loses them one by one.  The number sentence presented each time a disaster takes away one of the tail feathers. (00:52)
Found by ZG in 1.OA.A.1
July 13, 2009 at 01:42 PM
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Not Right For WatchKnowLearn
Ages: 3 - 7
2947 Views:
Light Bulb Subtraction - Sesame Street
From YouTube, produced by Sesame Street
This short, animated video uses light bulbs to demonstrate subtraction. Light bulbs are taken away one at a time until none are left.
Found by CKR11 in 1.OA.A.1
August 6, 2009 at 05:40 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.A.1
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.A.1
May 20, 2010 at 02:15 PM
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Not Right For WatchKnowLearn
Ages: 4 - 10
4277 Views:
Virtual Abacus
From usu.edu, produced by nvlm.edu
This virtual manipulative abacus allows children to explore other representations of numbers.  (It uses a Java applet).
May 9, 2010 at 09:54 AM
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Not Right For WatchKnowLearn
Ages: 3 - 6
3834 Views:
Eight Little Spiders - Basic Subtraction
From YouTube, produced by Sesame Street.org
This Sesame Street subtraction rhyme starts with 8 spiders. One by one, the spiders are subtracted leaving only one at the end. Shows the strategy of "take away one and count the remaining objects." (1:11)
Found by CKR11 in 1.OA.A.1
August 6, 2009 at 06:09 PM
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Not Right For WatchKnowLearn
Ages: 4 - 7
3267 Views:
Subtraction With Manipulatives
From eduplace.com, produced by Houghton Mifflin
Using counters, students will learn how to write a subtraction problem and determine the answer.  Count the objects in the whole group, cross out to take away and write how many are left.  9 - 4.
Found by tinag1974 in 1.OA.A.1
May 14, 2010 at 01:03 PM
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