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  • Numbers and Operations
How Many Days Until Summer Vacation?
Unrestricted Use
CC BY
How Many Days Until Summer Vacation?
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This task gives children an opportunity to subtract a three-digit number including a zero that requires regrouping. The solutions show how students can solve this problem before they have learned the traditional algorithm.

Subject:
Mathematics
Numbers and Operations
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
10/12/2012
MoreLess
How Much Pie?
Unrestricted Use
CC BY
How Much Pie?
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The purpose of this task is to help students see the connection between aÖb and ab in a particular concrete example. The relationship between the division problem 3Ö8 and the fraction 3/8 is actually very subtle.

Subject:
Mathematics
Numbers and Operations
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
07/15/2012
MoreLess
How many servings of oatmeal?
Unrestricted Use
CC BY
How many servings of oatmeal?
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This task provides a context for performing division of a whole number by a unit fraction. This problem is a "How many groups?'' example of division.

Subject:
Mathematics
Numbers and Operations
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
07/25/2012
MoreLess
Identify Correct Division with Remainders
Conditional Remix & Share Permitted
CC BY-NC-SA
Identify Correct Division with Remainders
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This short video and interactive assessment activity is designed to teach fourth graders about selecting the quotient using given statements.

Subject:
Mathematics
Numbers and Operations
Material Type:
Assessment
Interactive
Lecture
Provider:
CK-12 Foundation
Provider Set:
CK-12 Elementary Math
Date Added:
07/07/2021
MoreLess
Identify Correct Division with Remainders
Conditional Remix & Share Permitted
CC BY-NC-SA
Identify Correct Division with Remainders
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This short video and interactive assessment activity is designed to teach fifth graders about selecting the quotient with the correct number of digits.

Subject:
Mathematics
Numbers and Operations
Material Type:
Assessment
Interactive
Lecture
Provider:
CK-12 Foundation
Provider Set:
CK-12 Elementary Math
Date Added:
07/07/2021
MoreLess
Identify Equal Differences to 20
Conditional Remix & Share Permitted
CC BY-NC-SA
Identify Equal Differences to 20
Rating
0.0 stars

This short video and interactive assessment activity is designed to teach second graders about selecting the incorrect subtraction sentence (numbers up to 20).

Subject:
Mathematics
Numbers and Operations
Material Type:
Assessment
Interactive
Lecture
Provider:
CK-12 Foundation
Provider Set:
CK-12 Elementary Math
Date Added:
07/07/2021
MoreLess
Identify Equal Sums to 20
Conditional Remix & Share Permitted
CC BY-NC-SA
Identify Equal Sums to 20
Rating
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This course features a video review and an interactive assessment activity for selecting the correct addition sequence. It is aimed at first graders.

Subject:
Mathematics
Numbers and Operations
Material Type:
Assessment
Interactive
Lecture
Provider:
CK-12 Foundation
Provider Set:
CK-12 Elementary Math
Date Added:
07/07/2021
MoreLess
Identify Greater and Lesser Monetary Amounts
Conditional Remix & Share Permitted
CC BY-NC-SA
Identify Greater and Lesser Monetary Amounts
Rating
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This short video and interactive assessment activity is designed to teach fourth graders about comparing bills with pictures.

Subject:
Mathematics
Numbers and Operations
Material Type:
Assessment
Interactive
Lecture
Provider:
CK-12 Foundation
Provider Set:
CK-12 Elementary Math
Date Added:
07/07/2021
MoreLess
Identify Greater and Lesser Monetary Amounts
Conditional Remix & Share Permitted
CC BY-NC-SA
Identify Greater and Lesser Monetary Amounts
Rating
0.0 stars

This short video and interactive assessment activity is designed to teach second graders about identifying greater and lesser amounts.

Subject:
Mathematics
Numbers and Operations
Material Type:
Assessment
Interactive
Lecture
Provider:
CK-12 Foundation
Provider Set:
CK-12 Elementary Math
Date Added:
07/07/2021
MoreLess