Khan Academy
Khan Academy: Breaking Apart Two Digit Addition Problems
In this exercise, students practice breaking apart two-digit addition problems. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Break Apart 2 Digit Addition Problems
Practice breaking apart problems like 23+45 into problems like 20+40+3+5. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Other
Nearpod: Subtraction With Regrouping: Three Digit
In this lesson on subtraction, students will use the break apart strategy, draw a model, or the standard algorithm to subtract 3-digit numbers.
Other
Nearpod: Subtraction With Regrouping: Two Digit
In this lesson on subtraction, students will use the break apart strategy, draw a model, or the standard algorithm to subtract 2-digit numbers.
Read Works
Read Works: I Break Stuff for a Living
[Free Registration/Login Required] An autobiographical text about a young man who grew up interested in taking things apart to find out how they work, and how that later became career. A question sheet is available to help students build...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Optical Quantum Control
Explore an active area of research in optical physics: producing designer pulse shapes to achieve specific purposes, such as breaking apart a molecule.
Annenberg Foundation
Annenberg Learner: Conversations in Literature
A research based workshop by Judith Langer on bringing the joy of reading literature to your class. An excellent professional development resource, with eight videos on demand. Topics include Responding as Readers, Objectifying the Text,...
Khan Academy
Khan Academy: Adding 53+17 by Making a Group of 10
Sal adds 53+17 by breaking apart the numbers and making a group of 10. [3:35]
Khan Academy
Khan Academy: Decompose Fractions With Denominators of 100
Practice breaking apart (decomposing) some number of hundredths into tenths and hundredths. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Better Lesson
Better Lesson: Area of Irregular Polygon
Third graders look for break apart irregular polygons to make arrays to find the area of these common shapes.
ClassFlow
Class Flow: Breaking 10 Apart
[Free Registration/Login Required] This is an interactive lesson that encourages students to move around. It focuses on the students being able to recognize that numbers are the same even if you break them apart into groups. This lesson...
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Division Strategy: Partition the Dividend [Pdf]
Break numbers apart as a strategy to divide.
Khan Academy
Khan Academy: 2 Digit Place Value Challenge
Practice breaking numbers apart into tens and ones. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: 2 Digit Place Value Challenge
Practice breaking numbers apart into tens and ones.
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