Read Works
Read Works: Get in the Loop!
[Free Registration/Login Required] An informational text about the steps of recycling and tips for reusing and recycling. A question sheet is available to help students build skills in reading comprehension.
Sophia Learning
Sophia:multiplying With Decomposition
The video lesson examines multiplying using decomposition. Detailed examples investigate the multiplication technique.
Other
Advanced Composting Systems: Phoenix Composting Toilet
Explains how composting toilets work, their benefits to the environment, useful applications, and information on how to choose a system.
![Pa State Dept.: Composting [Pdf] Website](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Pa State Dept.: Composting [Pdf] Website")
Other
Pa State Dept.: Composting [Pdf]
This subject page on compost is informative, regarding home composting, grasscycling, and vermicomposting, along with compostable material charts, basic instructions, and fine tuning of the composting procedure. Site lists uses/benefits...
Khan Academy
Khan Academy: Decomposing Angles
In this exercise, students practice decomposing angles. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Illustrative Mathematics
Illustrative Mathematics: 3.md the Square Counting Shortcut
This is a rectangle subdivision task; ideally instead of counting each square. students should break the letters into rectangles, multiply to find the areas, and add up the areas. Aligns with 3.MD.C: CCSS.Math.Content.3.MD.C.6 Measure...
Purple Math
Purplemath: Partial Fraction Decomposition: General Techniques
Partial-fraction decomposition is the process of starting with the simplified answer and taking it back apart, of "decomposing" the final expression into its initial polynomial fractions. This reference material demonstrates the...
University of Canterbury
Cs Unplugged: Divide and Conquer
Imagine 31 numbers have been organized in ascending order in a list by a computer program. Now the program has to find a number in the list, but it can only look at one number at a time. Is it easier to find the number now, than if they...
Better Lesson
Better Lesson: Finding the Area of a Trapezoid
Sixth graders find the area of a trapezoid by decomposing it into triangles and using the formula
Better Lesson
Better Lesson: Finding Arrays in an Irregular Polygon
Third graders decompose an irregular polygon into arrays to find the area.
Better Lesson
Better Lesson: Fun With Four: Decomposing to Known Factors of 1, 2, and 5
Third graders act as problem solvers to take an unknown fact and solve it by breaking it down into pieces that are known.
Better Lesson
Better Lesson: Filling Shadows With More and Less
First graders use their understanding of composing and decomposing shapes to cover a given area. Today's lesson is bringing together many of the geometric skills from previous lessons.
Better Lesson
Better Lesson: Filling the Shadow
Variety is the spice of life and the concept of the day as students fill the same pattern block outline three different ways.
Better Lesson
Better Lesson: Area & the Distributive Property
Third graders develop spatial reasoning about large areas through composing and decomposing rectangles to determine area.
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide Addition, Subtraction Within 1000 With Word Problems to 100
A guide to support parents as they work with their students in addition and subtraction within 1000 with word problems to 100.
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide Addition, Subtraction Within 200 With Word Problems to 100
A guide to support parents as they work with their students in addition and subtraction within 200 with word problems to 100.
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide Intro to Place Value Through Addition, Subtraction Within 20
A guide to support parents as they work with their students in introduction to place value through addition and subtraction within 20.
Sophia Learning
Sophia: What Are Systems?: Lesson 2
At the end of this tutorial, the learner will understand the basic structure that underlies all systems, including human groups and organizations. It is 2 of 3 in the series titled "What are Systems?."
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...