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Number and Operations
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The study of numbers and operations is the cornerstone of the mathematics ...

The study of numbers and operations is the cornerstone of the mathematics curriculum. Learning what numbers mean, how they may be represented, relationships among them, and computations with them is central to developing number sense.

Subject:
Engineering
Material Type:
Full Course
Instructional Material
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
K-12 Outreach,
TeachEngineering.org
Overview of Mixed Operations (Numbers to 100) - Word Problems
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This short video and interactive assessment activity is designed to teach second ...

This short video and interactive assessment activity is designed to teach second graders an overview of mixed operations (numbers to 100) - word problems.

Subject:
Mathematics
Numbers and Operations
Material Type:
Assessments
Interactive
Video Lectures
Provider:
CK-12 Foundation
Provider Set:
CK-12 Elementary Math
Operations with Rational and Irrational Numbers
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This task has students experiment with the operations of addition and multiplication, ...

This task has students experiment with the operations of addition and multiplication, as they relate to the notions of rationality and irrationality.

Subject:
Education
Mathematics
Material Type:
Activities and Labs
Instructional Material
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Operations on the number line
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The purpose of this task is to help solidify students' understanding of ...

The purpose of this task is to help solidify students' understanding of signed numbers as points on a number line and to understand the geometric interpretation of adding and subtracting signed numbers.

Subject:
Education
Mathematics
Material Type:
Activities and Labs
Instructional Material
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Number Cruncher
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In this online puzzle game, learners need to choose a path from ...

In this online puzzle game, learners need to choose a path from a starting number to a goal number. Along the path are simple operations (e.g. add 1, subtract 2, multiply by 2) to change the current number to a new number. This is a good challenge for young learners. When learners set up a free account at Kinetic City, they can answer bonus questions at the end of the activity as a quick assessment. As a larger assessment, learners can complete the Bug Blaster game after they've completed several activities.

Subject:
Education
Mathematics
Material Type:
Activities and Labs
Games
Instructional Material
Provider:
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
American Association for the Advancement of Science
National Science Foundation