Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.
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Category Videos

Not Right For WatchKnowLearn
Ages: 3  6
8950 Views:

Ernie shows up wanting to talk to Bert about addition. Ernie sings a song about addition as more and more characters are added to the crowd. At the end, Ernie leaves Bert with a whole crowd! (03:41)
August 6, 2009 at 05:57 PM


Not Right For WatchKnowLearn
Ages: 5  11
14426 Views:

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.
May 14, 2010 at 02:04 PM


Not Right For WatchKnowLearn
Ages: 7  12
11088 Views:

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, selfchecking quiz.
June 18, 2011 at 10:26 PM


Not Right For WatchKnowLearn
Ages: 3  7
10669 Views:

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...ung children. (02:04)
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July 25, 2009 at 10:59 AM


Not Right For WatchKnowLearn
Ages: 4  7
11151 Views:

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...raction problems, students use the same cube trains but start with the whole (10) and then break it down into the two parts (2, 8). Write the subtraction sentences with the same numbers 2, 8 and 10 (108=2, 102=8).
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May 14, 2010 at 01:29 PM


Not Right For WatchKnowLearn
Ages: 7  12
7030 Views:

In this video, the instructor uses the Paint Program to review how to add numbers. He starts with singledigit numbers, moves into twodigit and fourdigit numbers, and reviews place value. (08:57)
January 27, 2010 at 02:32 AM


Not Right For WatchKnowLearn
Ages: 4  7
12095 Views:

This addition strategy shows students how to use the double fact (e.g., 3 + 3 ) or a doubles plus one strategy to add quickly. User clicks through the slides.
May 14, 2010 at 01:24 PM


Not Right For WatchKnowLearn
Ages: 3  7
7116 Views:

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)
July 13, 2009 at 01:42 PM


Not Right For WatchKnowLearn
Ages: 3  7
6201 Views:

One Plus...
From YouTube, produced by EarlyLearningatHome.com


This video features a catchy song adding 1 to other numerals. (1 + 1, 1 + 2. etc.) Great for visual and aural younger learners. [Note: : 1 + 7 has a reference to 'Angels come from Heaven.') (01:03)
March 14, 2010 at 11:46 AM


Not Right For WatchKnowLearn
Ages: 5  8
6171 Views:

Using ten frames and mainpulatives, students learn how to add two numbers by making ten and then counting on. 10 is an important benchmark number. User clicks through the slides.
May 14, 2010 at 02:32 PM
