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Adding Fractions with Different Denominators
Conditional Remix & Share Permitted
CC BY-NC-SA
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This short video and interactive assessment activity is designed to teach fifth graders about adding fractions with different denominators.

Subject:
Mathematics
Numbers and Operations
Material Type:
Assessment
Interactive
Lecture
Provider:
CK-12 Foundation
Provider Set:
CK-12 Elementary Math
Date Added:
04/03/2018
Adding Fractions with unlike denominators
Unrestricted Use
CC BY
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The math learning center is an app and online platform that allows students to use manipulatives virtually. In this activity, students will use virtual manipulatives to add fractions with unlike denominators

Subject:
Mathematics
Material Type:
Activity/Lab
Date Added:
08/28/2020
Adding Mixed Numbers with Common Denominators
Conditional Remix & Share Permitted
CC BY-NC-SA
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0.0 stars

This short video and interactive assessment activity is designed to teach fifth graders about adding mixed numbers with common denominators.

Subject:
Mathematics
Numbers and Operations
Material Type:
Assessment
Interactive
Lecture
Provider:
CK-12 Foundation
Provider Set:
CK-12 Elementary Math
Date Added:
04/03/2018
Algebra II, Spring 2011
Conditional Remix & Share Permitted
CC BY-NC-SA
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This undergraduate level course follows Algebra I. Topics include group representations, rings, ideals, fields, polynomial rings, modules, factorization, integers in quadratic number fields, field extensions, and Galois theory.

Subject:
Algebra
Mathematics
Material Type:
Full Course
Provider:
MIT
Provider Set:
MIT OpenCourseWare
Author:
Artin, Michael
Date Added:
01/01/2011
All Tangled Up
Unrestricted Use
CC BY
Rating
0.0 stars

This Nrich problem follows on from Twisting and Turning and More Twisting and Turning and offers students the opportunity to explore sequences of fractions, make generalizations, and prove conjectures. The rope trick in the first problem offers a moment of surprise when the rope becomes untangled, and this prompts curious students to want to explain what is going on. This third problem in the sequence ties up all the loose ends still remaining.

Subject:
Mathematics
Material Type:
Activity/Lab
Date Added:
06/17/2021
Almost One
Unrestricted Use
CC BY
Rating
0.0 stars

This Nrich problem embeds adding and subtracting fractions into a bigger problem to increase interest.

Subject:
Mathematics
Material Type:
Activity/Lab
Date Added:
06/17/2021
Andy's Marbles
Unrestricted Use
CC BY
Rating
0.0 stars

This Nrich problem involves complicated reasoning about fractions that challenges children's understandings of the concepts involved. It is a good example of how fractions relate to multiplication and division.

Subject:
Mathematics
Material Type:
Activity/Lab
Date Added:
06/17/2021
Area Builder
Unrestricted Use
CC BY
Rating
0.0 stars

Create your own shapes using colorful blocks and explore the relationship between perimeter and area. Compare the area and perimeter of two shapes side-by-side. Challenge yourself in the game screen to build shapes or find the area of funky figures. Try to collect lots of stars!

Subject:
Mathematics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Amanda McGarry
Ariel Paul
Beth Stade
Bryce Gruneich
John Blanco
Karina Hensberry (lead)
Kathy Perkins
Date Added:
03/20/2020
Arithmetic
Unrestricted Use
CC BY
Rating
0.0 stars

Remember your multiplication tables? ... me neither. Brush up on your multiplication, division, and factoring skills with this exciting game. No calculators allowed! The students will be given mutiplication and division problems which they must answer. They also have the option of being given a number then stating the factors of how that number was attained using either multiplication or division.

Subject:
Mathematics
Numbers and Operations
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Date Added:
05/01/2006
Ben's Game
Unrestricted Use
CC BY
Rating
0.0 stars

This Nrich problem requires some simple knowledge of fractions and multiples and demands some strategic thinking. It may offer a good opportunity to compare methods between students - there isn't just one route to the solution. Note that there is no need to use algebra in this problem.

Subject:
Mathematics
Material Type:
Activity/Lab
Date Added:
06/17/2021
A Bowl of Fruit
Unrestricted Use
CC BY
Rating
0.0 stars

This Nrich problem requires a sound understanding of the relationship between part and whole. It could be used as part of a lesson on finding fractions of numbers and quantities.

Subject:
Mathematics
Material Type:
Activity/Lab
Diagram/Illustration
Date Added:
06/17/2021
A Chance to Win?
Unrestricted Use
CC BY
Rating
0.0 stars

This Nrich problem can be used to introduce learning about percentage increases and decreases.

Subject:
Mathematics
Material Type:
Activity/Lab
Game
Date Added:
06/17/2021
Choosing the Most Orange Crystal
Conditional Remix & Share Permitted
CC BY-NC-SA
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0.0 stars

In this video segment from Cyberchase, the CyberSquad must locate a crystal with the highest fraction of orange color.

Subject:
Mathematics
Material Type:
Lecture
Author:
WNET
U.S. Department of Education
Date Added:
08/05/2020
Circuit Training
Unrestricted Use
CC BY
Rating
0.0 stars

In this Nrich problem students build on their existing knowledge of proportions to build a function in an engaging context.

Subject:
Mathematics
Material Type:
Activity/Lab
Date Added:
06/18/2021