CK-12 Foundation
Ck 12: Elem Math: Subtracting by Crossing Out With Pictures
[Free Registration/Login may be required to access all resource tools.] The video shows modeling of subtraction by crossing out pictures with numbers less than ten. The video is followed by a series of practice questions to assess...
CK-12 Foundation
Ck 12: Elem Math: Selecting the Subtracting Sentence by Crossing Out
[Free Registration/Login may be required to access all resource tools.] The video describes how to determine which subtraction sentence coincides with the given picture where the subtraction is shown by crossing out objects. The video is...
CK-12 Foundation
Ck 12: Elem Math: Subtracting One Digit Numbers Word Problems
[Free Registration/Login may be required to access all resource tools.] The video shows how to solve a subtraction problem by creating a model. The video is followed by a series of practice questions to assess student comprehension of...
CK-12 Foundation
Ck 12: Elem Math: Completing the Whole Add Together
[Free Registration/Login may be required to access all resource tools.] The interactive practice problems involve completing the whole by determining what portion of the diagram or fraction are missing to make the whole. When students...
CK-12 Foundation
Ck 12: Elem Math: Subtracting by Crossing Out With Pictures Word Problems
[Free Registration/Login may be required to access all resource tools.] The video uses a picture to aide in describing how to subtract by crossing out the total number being subtracted. The video is followed by additional problems for...
CK-12 Foundation
Ck 12: Elem Math: Add and Subtract to 100 Mixed Operations and Word Problems
[Free Registration/Login may be required to access all resource tools.] This is a set of practice problems where students solve addition and subtraction problems in order to determine missing numbers to keep the equation balanced. When...
CK-12 Foundation
Ck 12: Elem Math: Expressing an Equivalent Decimal Ending in Zero to Thousandths
[Free Registration/Login may be required to access all resource tools.] The video describes how to add zeros as place holders at the end of a decimal to make an equivalent decimal out to the thousandths place value in this example.
CK-12 Foundation
Ck 12: Elem Math: Selecting the Correct Subtraction Sentence
[Free Registration/Login may be required to access all resource tools.] The video shows how to solve various multi-digit subtraction problems to determine which problem has a difference that matches the given value. The video is followed...
CK-12 Foundation
Ck 12: Elem Math: Finding the Subtraction Sentence by Pattern
[Free Registration/Login may be required to access all resource tools.] The video shows how to find a pattern in a series of subtraction problems to determine the missing problem in the set. The video is followed by additional problems...
CK-12 Foundation
Ck 12: Elem Math: Adding and Subtracting Terms Numbers to 1000
[Free Registration/Login may be required to access all resource tools.] The video describes addition and subtraction vocabulary. The video is followed by practice problems utilizing the vocabulary.
CK-12 Foundation
Ck 12: Elem Math: Counting Straight Lines and Curves in Various Shapes
[Free Registration/Login may be required to access all resource tools.] The video shows how to count the number of straight lines and curves in a given 2D figure. The video is followed by practice problems.
CK-12 Foundation
Ck 12: Elem Math: True or False From Words to Numbers
[Free Registration/Login may be required to access all resource tools.] These practice problems are true and false questions where students have to decide if the numeric money value matches the written words.
CK-12 Foundation
Ck 12: Elem Math: Subtraction Select the Correct Sentence
[Free Registration/Login may be required to access all resource tools.] The video shows how to use regrouping to solve a series of multi-digit subtraction problems to determine which one results in the given difference. The video is...
CK-12 Foundation
Ck 12: Elem Math: Subtraction Select the Incorrect Sentence
[Free Registration/Login may be required to access all resource tools.] The video shows how to solve various multi-digit subtraction problems to determine which problem has a difference that doesn't match the given value. The video is...
CK-12 Foundation
Ck 12: Elem Math: Relationship Between Factors and Products
[Free Registration/Login may be required to access all resource tools.] The video shows how to fill in a table of factors and products to show the relationship between factors and products of two-digit and one-digit numbers. The video is...
CK-12 Foundation
Ck 12: Elem Math: Patterns Without Using Multiplication
[Free Registration/Login may be required to access all resource tools.] The video describes how to divide by two using a model to show equal parts to solve a two-digit by one-digit division problem with no remainder. The video is...
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